31513434534 has 32 divisors (see below), whose sum is σ = 70103917440. Its totient is φ = 10493368776.

The previous prime is 31513434517. The next prime is 31513434569. The reversal of 31513434534 is 43543431513.

31513434534 is a `hidden beast` number, since 31 + 51 + 3 + 43 + 4 + 534 = 666.

It is a super-2 number, since 2×31513434534² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 256984 + ... + 359259.

It is an arithmetic number, because the mean of its divisors is an integer number (2190747420).

Almost surely, 2^31513434534 is an apocalyptic number.

31513434534 is an abundant number, since it is smaller than the sum of its proper divisors (38590482906).

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

31513434534 is a wasteful number, since it uses less digits than its factorization.

31513434534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617201 (or 617195 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The spelling of 31513434534 in words is "thirty-one billion, five hundred thirteen million, four hundred thirty-four thousand, five hundred thirty-four".