Search a number
-
+
120234031 = 213756263
BaseRepresentation
bin1110010101010…
…10000000101111
322101020112002021
413022222000233
5221234442111
615533011011
72656654351
oct712520057
9271215067
10120234031
1161961675
1234323a67
131bba95c8
1411d7b0d1
15a84ed71
hex72aa02f

120234031 has 4 divisors (see below), whose sum is σ = 120292432. Its totient is φ = 120175632.

The previous prime is 120234019. The next prime is 120234043. The reversal of 120234031 is 130432021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130432021 = 479927179.

It is an interprime number because it is at equal distance from previous prime (120234019) and next prime (120234043).

It is a cyclic number.

It is not a de Polignac number, because 120234031 - 219 = 119709743 is a prime.

It is a super-2 number, since 2×1202340312 = 28912444421017922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120233996 and 120234014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120234001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25995 + ... + 30268.

It is an arithmetic number, because the mean of its divisors is an integer number (30073108).

Almost surely, 2120234031 is an apocalyptic number.

120234031 is a deficient number, since it is larger than the sum of its proper divisors (58401).

120234031 is an equidigital number, since it uses as much as digits as its factorization.

120234031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58400.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 120234031 is about 10965.1279518298. The cubic root of 120234031 is about 493.5628566848.

Adding to 120234031 its reverse (130432021), we get a palindrome (250666052).

The spelling of 120234031 in words is "one hundred twenty million, two hundred thirty-four thousand, thirty-one".

Divisors: 1 2137 56263 120234031