23379531 has 16 divisors (see below), whose sum is σ = 36211968. Its totient is φ = 13140000.

The previous prime is 23379509. The next prime is 23379541. The reversal of 23379531 is 13597332.

It is not a de Polignac number, because 23379531 - 2¹⁰ = 23378507 is a prime.

It is a super-2 number, since 2×23379531² = 1093204939559922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23379492 and 23379501.

It is not an unprimeable number, because it can be changed into a prime (23379541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7845 + ... + 10406.

It is an arithmetic number, because the mean of its divisors is an integer number (2263248).

Almost surely, 2^23379531 is an apocalyptic number.

23379531 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23379531 is a deficient number, since it is larger than the sum of its proper divisors (12832437).

23379531 is a wasteful number, since it uses less digits than its factorization.

23379531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18322.

The product of its digits is 17010, while the sum is 33.

The square root of 23379531 is about 4835.2384636127. The cubic root of 23379531 is about 285.9424265089.

The spelling of 23379531 in words is "twenty-three million, three hundred seventy-nine thousand, five hundred thirty-one".