31135648554 has 24 divisors (see below), whose sum is σ = 67608205860. Its totient is φ = 10355836608.

The previous prime is 31135648547. The next prime is 31135648561. The reversal of 31135648554 is 45584653113.

31135648554 is a `hidden beast` number, since 3 + 1 + 1 + 3 + 56 + 48 + 554 = 666.

It is an interprime number because it is at equal distance from previous prime (31135648547) and next prime (31135648561).

It can be written as a sum of positive squares in 2 ways, for example, as 24157552329 + 6978096225 = 155427^2 + 83535^2 .

It is a super-2 number, since 2×31135648554² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1884289 + ... + 1900740.

Almost surely, 2^31135648554 is an apocalyptic number.

31135648554 is an abundant number, since it is smaller than the sum of its proper divisors (36472557306).

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

31135648554 is a wasteful number, since it uses less digits than its factorization.

31135648554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3785494 (or 3785491 counting only the distinct ones).

The product of its digits is 864000, while the sum is 45.

The spelling of 31135648554 in words is "thirty-one billion, one hundred thirty-five million, six hundred forty-eight thousand, five hundred fifty-four".