31373849351 has 12 divisors (see below), whose sum is σ = 35760915720. Its totient is φ = 27436237920.

The previous prime is 31373849347. The next prime is 31373849363. The reversal of 31373849351 is 15394837313.

It is not a de Polignac number, because 31373849351 - 2² = 31373849347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31373849296 and 31373849305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31373849051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4882160 + ... + 4888581.

It is an arithmetic number, because the mean of its divisors is an integer number (2980076310).

Almost surely, 2^31373849351 is an apocalyptic number.

31373849351 is a deficient number, since it is larger than the sum of its proper divisors (4387066369).

31373849351 is a wasteful number, since it uses less digits than its factorization.

31373849351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9770786 (or 9770773 counting only the distinct ones).

The product of its digits is 816480, while the sum is 47.

The spelling of 31373849351 in words is "thirty-one billion, three hundred seventy-three million, eight hundred forty-nine thousand, three hundred fifty-one".