31478763552 has 48 divisors (see below), whose sum is σ = 82717098912. Its totient is φ = 10482083840.

The previous prime is 31478763527. The next prime is 31478763593. The reversal of 31478763552 is 25536787413.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 31478763495 and 31478763504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75633 + ... + 262064.

It is an arithmetic number, because the mean of its divisors is an integer number (1723272894).

Almost surely, 2^31478763552 is an apocalyptic number.

31478763552 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31478763552 is an abundant number, since it is smaller than the sum of its proper divisors (51238335360).

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

31478763552 is a wasteful number, since it uses less digits than its factorization.

31478763552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338681 (or 338673 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 51.

The spelling of 31478763552 in words is "thirty-one billion, four hundred seventy-eight million, seven hundred sixty-three thousand, five hundred fifty-two".