31406442516 has 72 divisors (see below), whose sum is σ = 80126670624. Its totient is φ = 10371741120.

The previous prime is 31406442503. The next prime is 31406442547. The reversal of 31406442516 is 61524460413.

31406442516 is a `hidden beast` number, since 3 + 1 + 4 + 0 + 644 + 2 + 5 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 3027210 + ... + 3037566.

Almost surely, 2^31406442516 is an apocalyptic number.

31406442516 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31406442516 is an abundant number, since it is smaller than the sum of its proper divisors (48720228108).

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

31406442516 is a wasteful number, since it uses less digits than its factorization.

31406442516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11141 (or 11136 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 31406442516 in words is "thirty-one billion, four hundred six million, four hundred forty-two thousand, five hundred sixteen".