31272136436472 has 64 divisors (see below), whose sum is σ = 78231473460000. Its totient is φ = 10417228783104.

The previous prime is 31272136436441. The next prime is 31272136436477. The reversal of 31272136436472 is 27463463127213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31272136436477) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 819717654 + ... + 819755802.

Almost surely, 2^{31272136436472} is an apocalyptic number.

It is an amenable number.

31272136436472 is an abundant number, since it is smaller than the sum of its proper divisors (46959337023528).

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

31272136436472 is a wasteful number, since it uses less digits than its factorization.

31272136436472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59600 (or 59596 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 51.

The spelling of 31272136436472 in words is "thirty-one trillion, two hundred seventy-two billion, one hundred thirty-six million, four hundred thirty-six thousand, four hundred seventy-two".