231031310000 has 200 divisors, whose sum is σ = 576674642544. Its totient is φ = 89579520000.

The previous prime is 231031309987. The next prime is 231031310017. The reversal of 231031310000 is 13130132.

It is a tau number, because it is divible by the number of its divisors (200).

It is a super-2 number, since 2×231031310000² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 66828272 + ... + 66831728.

Almost surely, 2^231031310000 is an apocalyptic number.

231031310000 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 231031310000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288337321272).

231031310000 is an abundant number, since it is smaller than the sum of its proper divisors (345643332544).

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

231031310000 is a wasteful number, since it uses less digits than its factorization.

231031310000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3689 (or 3668 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 231031310000 its reverse (13130132), we get a palindrome (231044440132).

The spelling of 231031310000 in words is "two hundred thirty-one billion, thirty-one million, three hundred ten thousand".