311431142040 has 64 divisors (see below), whose sum is σ = 934331004000. Its totient is φ = 83044964352.

The previous prime is 311431141993. The next prime is 311431142053. The reversal of 311431142040 is 40241134113.

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

It is a self number, because there is not a number n which added to its sum of digits gives 311431142040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4870114 + ... + 4933646.

Almost surely, 2^311431142040 is an apocalyptic number.

311431142040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311431142040 is an abundant number, since it is smaller than the sum of its proper divisors (622899861960).

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

311431142040 is a wasteful number, since it uses less digits than its factorization.

311431142040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104396 (or 104392 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 311431142040 its reverse (40241134113), we get a palindrome (351672276153).

The spelling of 311431142040 in words is "three hundred eleven billion, four hundred thirty-one million, one hundred forty-two thousand, forty".