311231130000 has 200 divisors, whose sum is σ = 1148224300608. Its totient is φ = 71138496000.

The previous prime is 311231129981. The next prime is 311231130017. The reversal of 311231130000 is 31132113.

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

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 39 ways as a sum of consecutive naturals, for example, 531027 + ... + 951026.

Almost surely, 2^311231130000 is an apocalyptic number.

311231130000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311231130000 is an abundant number, since it is smaller than the sum of its proper divisors (836993170608).

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

311231130000 is a wasteful number, since it uses less digits than its factorization.

311231130000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482091 (or 1482070 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 311231130000 its reverse (31132113), we get a palindrome (311262262113).

The spelling of 311231130000 in words is "three hundred eleven billion, two hundred thirty-one million, one hundred thirty thousand".