31225927472 has 20 divisors (see below), whose sum is σ = 61525664040. Its totient is φ = 15348336768.

The previous prime is 31225927459. The next prime is 31225927493. The reversal of 31225927472 is 27472952213.

It is a super-3 number, since 3×31225927472³ (a number of 32 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16538213 + ... + 16540100.

It is an arithmetic number, because the mean of its divisors is an integer number (3076283202).

Almost surely, 2^31225927472 is an apocalyptic number.

It is an amenable number.

31225927472 is a deficient number, since it is larger than the sum of its proper divisors (30299736568).

31225927472 is a wasteful number, since it uses less digits than its factorization.

31225927472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33078380 (or 33078374 counting only the distinct ones).

The product of its digits is 423360, while the sum is 44.

The spelling of 31225927472 in words is "thirty-one billion, two hundred twenty-five million, nine hundred twenty-seven thousand, four hundred seventy-two".