Search a number
-
+
23230031 = 119912131
BaseRepresentation
bin101100010011…
…1011001001111
31121201012121112
41120213121033
521421330111
62145522235
7401311016
oct130473117
947635545
1023230031
1112127080
12794337b
134a746a6
143129a7d
15208ce8b
hex162764f

23230031 has 8 divisors (see below), whose sum is σ = 25379328. Its totient is φ = 21087000.

The previous prime is 23229967. The next prime is 23230037. The reversal of 23230031 is 13003232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23230031 - 26 = 23229967 is a prime.

It is a super-2 number, since 2×232300312 = 1079268680521922, 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 = 23229988 and 23230015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23230037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9836 + ... + 11966.

It is an arithmetic number, because the mean of its divisors is an integer number (3172416).

Almost surely, 223230031 is an apocalyptic number.

23230031 is a deficient number, since it is larger than the sum of its proper divisors (2149297).

23230031 is a wasteful number, since it uses less digits than its factorization.

23230031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3133.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 23230031 is about 4819.7542468470. The cubic root of 23230031 is about 285.3316381546.

Adding to 23230031 its reverse (13003232), we get a palindrome (36233263).

The spelling of 23230031 in words is "twenty-three million, two hundred thirty thousand, thirty-one".

Divisors: 1 11 991 2131 10901 23441 2111821 23230031