Search a number
-
+
23124031 = 749631
BaseRepresentation
bin101100000110…
…1100000111111
31121111211012121
41120031200333
521404432111
62143343411
7400360000
oct130154077
947454177
1023124031
1112064477
1278b1b67
134a38378
1430dd1a7
15206b871
hex160d83f

23124031 has 10 divisors (see below), whose sum is σ = 26979232. Its totient is φ = 19818540.

The previous prime is 23124019. The next prime is 23124037. The reversal of 23124031 is 13042132.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2k-23124031 is a prime.

It is a super-2 number, since 2×231240312 = 1069441619377922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23123996 and 23124014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23124037) 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 9 ways as a sum of consecutive naturals, for example, 2415 + ... + 7216.

Almost surely, 223124031 is an apocalyptic number.

23124031 is a deficient number, since it is larger than the sum of its proper divisors (3855201).

23124031 is an frugal number, since it uses more digits than its factorization.

23124031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9659 (or 9638 counting only the distinct ones).

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

The square root of 23124031 is about 4808.7452625399. The cubic root of 23124031 is about 284.8969813363.

Adding to 23124031 its reverse (13042132), we get a palindrome (36166163).

The spelling of 23124031 in words is "twenty-three million, one hundred twenty-four thousand, thirty-one".

Divisors: 1 7 49 343 2401 9631 67417 471919 3303433 23124031