311131120272 has 40 divisors (see below), whose sum is σ = 918577594176. Its totient is φ = 88894605696.

The previous prime is 311131120271. The next prime is 311131120273. The reversal of 311131120272 is 272021131113.

It is an interprime number because it is at equal distance from previous prime (311131120271) and next prime (311131120273).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (311131120271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462992403 + ... + 462993074.

Almost surely, 2^311131120272 is an apocalyptic number.

It is an amenable number.

311131120272 is an abundant number, since it is smaller than the sum of its proper divisors (607446473904).

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

311131120272 is a wasteful number, since it uses less digits than its factorization.

311131120272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925985495 (or 925985489 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

Adding to 311131120272 its reverse (272021131113), we get a palindrome (583152251385).

The spelling of 311131120272 in words is "three hundred eleven billion, one hundred thirty-one million, one hundred twenty thousand, two hundred seventy-two".