311112031000 has 128 divisors (see below), whose sum is σ = 737668451520. Its totient is φ = 122803200000.

The previous prime is 311112030967. The next prime is 311112031003. The reversal of 311112031000 is 130211113.

It is a super-2 number, since 2×311112031000² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311112031003) 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, 23704440 + ... + 23717560.

Almost surely, 2^311112031000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 311112031000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368834225760).

311112031000 is an abundant number, since it is smaller than the sum of its proper divisors (426556420520).

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

311112031000 is a wasteful number, since it uses less digits than its factorization.

311112031000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13454 (or 13440 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 311112031000 its reverse (130211113), we get a palindrome (311242242113).

The spelling of 311112031000 in words is "three hundred eleven billion, one hundred twelve million, thirty-one thousand".