23311231000 has 128 divisors (see below), whose sum is σ = 55347701760. Its totient is φ = 9188928000.

The previous prime is 23311230997. The next prime is 23311231001. The reversal of 23311231000 is 13211332.

It is a super-2 number, since 2×23311231000² (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 (23311231001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21970470 + ... + 21971530.

It is an arithmetic number, because the mean of its divisors is an integer number (432403920).

Almost surely, 2^23311231000 is an apocalyptic number.

23311231000 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 23311231000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27673850880).

23311231000 is an abundant number, since it is smaller than the sum of its proper divisors (32036470760).

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

23311231000 is a wasteful number, since it uses less digits than its factorization.

23311231000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382 (or 1368 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 23311231000 its reverse (13211332), we get a palindrome (23324442332).

The spelling of 23311231000 in words is "twenty-three billion, three hundred eleven million, two hundred thirty-one thousand".