31311100423140 has 96 divisors (see below), whose sum is σ = 88623611940864. Its totient is φ = 8259299758080.

The previous prime is 31311100423037. The next prime is 31311100423177. The reversal of 31311100423140 is 4132400111313.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31311100423140.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3528601 + ... + 8664480.

It is an arithmetic number, because the mean of its divisors is an integer number (923162624384).

Almost surely, 2^{31311100423140} is an apocalyptic number.

31311100423140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31311100423140 is an abundant number, since it is smaller than the sum of its proper divisors (57312511517724).

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

31311100423140 is a wasteful number, since it uses less digits than its factorization.

31311100423140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12193557 (or 12193555 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 31311100423140 its reverse (4132400111313), we get a palindrome (35443500534453).

The spelling of 31311100423140 in words is "thirty-one trillion, three hundred eleven billion, one hundred million, four hundred twenty-three thousand, one hundred forty".