31242032004144 has 160 divisors (see below), whose sum is σ = 86996766850560. Its totient is φ = 9604108394496.

The previous prime is 31242032004137. The next prime is 31242032004187. The reversal of 31242032004144 is 44140023024213.

It is a super-2 number, since 2×31242032004144² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4670654752 + ... + 4670661440.

It is an arithmetic number, because the mean of its divisors is an integer number (543729792816).

Almost surely, 2^{31242032004144} is an apocalyptic number.

It is an amenable number.

31242032004144 is an abundant number, since it is smaller than the sum of its proper divisors (55754734846416).

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

31242032004144 is a wasteful number, since it uses less digits than its factorization.

31242032004144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12467 (or 12461 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 31242032004144 its reverse (44140023024213), we get a palindrome (75382055028357).

The spelling of 31242032004144 in words is "thirty-one trillion, two hundred forty-two billion, thirty-two million, four thousand, one hundred forty-four".