23211031000 has 64 divisors (see below), whose sum is σ = 54383827680. Its totient is φ = 9272444800.

The previous prime is 23211030967. The next prime is 23211031007. The reversal of 23211031000 is 13011232.

It is a super-2 number, since 2×23211031000² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23211031007) 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, 782439 + ... + 811561.

Almost surely, 2^23211031000 is an apocalyptic number.

23211031000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23211031000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27191913840).

23211031000 is an abundant number, since it is smaller than the sum of its proper divisors (31172796680).

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

23211031000 is a wasteful number, since it uses less digits than its factorization.

23211031000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29941 (or 29927 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 23211031000 its reverse (13011232), we get a palindrome (23224042232).

The spelling of 23211031000 in words is "twenty-three billion, two hundred eleven million, thirty-one thousand".