31401919476 has 72 divisors (see below), whose sum is σ = 84731774400. Its totient is φ = 9776712960.

The previous prime is 31401919463. The next prime is 31401919553. The reversal of 31401919476 is 67491910413.

It is a happy number.

31401919476 is a `hidden beast` number, since 3 + 1 + 401 + 91 + 94 + 76 = 666.

It is a super-2 number, since 2×31401919476² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 274741 + ... + 371868.

It is an arithmetic number, because the mean of its divisors is an integer number (1176830200).

Almost surely, 2^31401919476 is an apocalyptic number.

31401919476 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31401919476 is an abundant number, since it is smaller than the sum of its proper divisors (53329854924).

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

31401919476 is a wasteful number, since it uses less digits than its factorization.

31401919476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646709 (or 646704 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 31401919476 in words is "thirty-one billion, four hundred one million, nine hundred nineteen thousand, four hundred seventy-six".