31149771348 has 12 divisors (see below), whose sum is σ = 72682799840. Its totient is φ = 10383257112.

The previous prime is 31149771319. The next prime is 31149771349. The reversal of 31149771348 is 84317794113.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 31149771297 and 31149771306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31149771349) 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, 1297907128 + ... + 1297907151.

Almost surely, 2^31149771348 is an apocalyptic number.

It is an amenable number.

31149771348 is an abundant number, since it is smaller than the sum of its proper divisors (41533028492).

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

31149771348 is a wasteful number, since it uses less digits than its factorization.

31149771348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595814286 (or 2595814284 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The spelling of 31149771348 in words is "thirty-one billion, one hundred forty-nine million, seven hundred seventy-one thousand, three hundred forty-eight".