31479985476 has 45 divisors (see below), whose sum is σ = 82303250029. Its totient is φ = 10492263936.

The previous prime is 31479985447. The next prime is 31479985513. The reversal of 31479985476 is 67458997413.

The square root of 31479985476 is 177426.

It is a perfect power (a square), and thus also a powerful number.

31479985476 is a `hidden beast` number, since 3 + 1 + 4 + 79 + 98 + 5 + 476 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11605752900 + 19874232576 = 107730^2 + 140976^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 3188740 + ... + 3198596.

Almost surely, 2^31479985476 is an apocalyptic number.

31479985476 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

31479985476 is the 177426-th square number.

It is an amenable number.

31479985476 is an abundant number, since it is smaller than the sum of its proper divisors (50823264553).

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

31479985476 is an frugal number, since it uses more digits than its factorization.

31479985476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19730 (or 9862 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 63.

The spelling of 31479985476 in words is "thirty-one billion, four hundred seventy-nine million, nine hundred eighty-five thousand, four hundred seventy-six".