31554716136 has 16 divisors (see below), whose sum is σ = 78886790400. Its totient is φ = 10518238704.

The previous prime is 31554716131. The next prime is 31554716147. The reversal of 31554716136 is 63161745513.

It is a happy number.

It is a super-2 number, since 2×31554716136² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31554716131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657389896 + ... + 657389943.

It is an arithmetic number, because the mean of its divisors is an integer number (4930424400).

Almost surely, 2^31554716136 is an apocalyptic number.

It is an amenable number.

31554716136 is an abundant number, since it is smaller than the sum of its proper divisors (47332074264).

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

31554716136 is a wasteful number, since it uses less digits than its factorization.

31554716136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314779848 (or 1314779844 counting only the distinct ones).

The product of its digits is 226800, while the sum is 42.

The spelling of 31554716136 in words is "thirty-one billion, five hundred fifty-four million, seven hundred sixteen thousand, one hundred thirty-six".