23031221010 has 32 divisors (see below), whose sum is σ = 63171349632. Its totient is φ = 5264279040.

The previous prime is 23031220963. The next prime is 23031221023. The reversal of 23031221010 is 1012213032.

It is a super-2 number, since 2×23031221010² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54836031 + ... + 54836450.

It is an arithmetic number, because the mean of its divisors is an integer number (1974104676).

Almost surely, 2^23031221010 is an apocalyptic number.

23031221010 is an abundant number, since it is smaller than the sum of its proper divisors (40140128622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23031221010 is a wasteful number, since it uses less digits than its factorization.

23031221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109672498.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 23031221010 its reverse (1012213032), we get a palindrome (24043434042).

The spelling of 23031221010 in words is "twenty-three billion, thirty-one million, two hundred twenty-one thousand, ten".