311130312140 has 48 divisors (see below), whose sum is σ = 660494610720. Its totient is φ = 123098188800.

The previous prime is 311130312131. The next prime is 311130312149. The reversal of 311130312140 is 41213031113.

It is an interprime number because it is at equal distance from previous prime (311130312131) and next prime (311130312149).

It is a super-2 number, since 2×311130312140² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (311130312149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1982804 + ... + 2133956.

It is an arithmetic number, because the mean of its divisors is an integer number (13760304390).

Almost surely, 2^311130312140 is an apocalyptic number.

It is an amenable number.

311130312140 is an abundant number, since it is smaller than the sum of its proper divisors (349364298580).

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

311130312140 is a wasteful number, since it uses less digits than its factorization.

311130312140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152282 (or 152280 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 311130312140 its reverse (41213031113), we get a palindrome (352343343253).

The spelling of 311130312140 in words is "three hundred eleven billion, one hundred thirty million, three hundred twelve thousand, one hundred forty".