31145156148 has 24 divisors (see below), whose sum is σ = 73421229952. Its totient is φ = 10274690304.

The previous prime is 31145156113. The next prime is 31145156201. The reversal of 31145156148 is 84165154113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13377340 + ... + 13379667.

Almost surely, 2^31145156148 is an apocalyptic number.

It is an amenable number.

31145156148 is an abundant number, since it is smaller than the sum of its proper divisors (42276073804).

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

31145156148 is a wasteful number, since it uses less digits than its factorization.

31145156148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26757111 (or 26757109 counting only the distinct ones).

The product of its digits is 57600, while the sum is 39.

The spelling of 31145156148 in words is "thirty-one billion, one hundred forty-five million, one hundred fifty-six thousand, one hundred forty-eight".