31436534997 has 64 divisors (see below), whose sum is σ = 57880189440. Its totient is φ = 16450034688.

The previous prime is 31436534989. The next prime is 31436535041. The reversal of 31436534997 is 79943563413.

31436534997 is a `hidden beast` number, since 3 + 14 + 3 + 6 + 534 + 9 + 97 = 666.

It is not a de Polignac number, because 31436534997 - 2³ = 31436534989 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31436534977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13338 + ... + 251099.

It is an arithmetic number, because the mean of its divisors is an integer number (904377960).

Almost surely, 2^31436534997 is an apocalyptic number.

31436534997 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

31436534997 is a deficient number, since it is larger than the sum of its proper divisors (26443654443).

31436534997 is a wasteful number, since it uses less digits than its factorization.

31436534997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264507 (or 264501 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 54.

The spelling of 31436534997 in words is "thirty-one billion, four hundred thirty-six million, five hundred thirty-four thousand, nine hundred ninety-seven".