31367445534 has 72 divisors (see below), whose sum is σ = 74288134440. Its totient is φ = 9905430384.

The previous prime is 31367445523. The next prime is 31367445539. The reversal of 31367445534 is 43554476313.

31367445534 is a `hidden beast` number, since 3 + 1 + 3 + 6 + 74 + 45 + 534 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31367445534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31367445539) 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 35 ways as a sum of consecutive naturals, for example, 186412 + ... + 312224.

It is an arithmetic number, because the mean of its divisors is an integer number (1031779645).

Almost surely, 2^31367445534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31367445534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37144067220).

31367445534 is an abundant number, since it is smaller than the sum of its proper divisors (42920688906).

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

31367445534 is an equidigital number, since it uses as much as digits as its factorization.

31367445534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125858 (or 125837 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 45.

The spelling of 31367445534 in words is "thirty-one billion, three hundred sixty-seven million, four hundred forty-five thousand, five hundred thirty-four".