31449632832 has 70 divisors (see below), whose sum is σ = 93226579358. Its totient is φ = 10483209216.

The previous prime is 31449632831. The next prime is 31449632861. The reversal of 31449632832 is 23823694413.

31449632832 is a `hidden beast` number, since 3 + 1 + 4 + 4 + 9 + 632 + 8 + 3 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 22796168256 + 8653464576 = 150984^2 + 93024^2 .

It is a super-2 number, since 2×31449632832² (a number of 22 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (31449632831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3028153 + ... + 3038520.

Almost surely, 2^31449632832 is an apocalyptic number.

31449632832 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31449632832 is an abundant number, since it is smaller than the sum of its proper divisors (61776946526).

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

31449632832 is an equidigital number, since it uses as much as digits as its factorization.

31449632832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6066697 (or 6066678 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The spelling of 31449632832 in words is "thirty-one billion, four hundred forty-nine million, six hundred thirty-two thousand, eight hundred thirty-two".