31380055348 has 96 divisors (see below), whose sum is σ = 58716814464. Its totient is φ = 14655333888.

The previous prime is 31380055339. The next prime is 31380055349. The reversal of 31380055348 is 84355008313.

It is a super-2 number, since 2×31380055348² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31380055348.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31380055349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102215011 + ... + 102215317.

It is an arithmetic number, because the mean of its divisors is an integer number (611633484).

Almost surely, 2^31380055348 is an apocalyptic number.

It is an amenable number.

31380055348 is a deficient number, since it is larger than the sum of its proper divisors (27336759116).

31380055348 is a wasteful number, since it uses less digits than its factorization.

31380055348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 31380055348 in words is "thirty-one billion, three hundred eighty million, fifty-five thousand, three hundred forty-eight".