31315660103516 has 96 divisors (see below), whose sum is σ = 59143330391040. Its totient is φ = 14455532242944.

The previous prime is 31315660103479. The next prime is 31315660103543. The reversal of 31315660103516 is 61530106651313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3189937040 + ... + 3189946856.

It is an arithmetic number, because the mean of its divisors is an integer number (616076358240).

Almost surely, 2^{31315660103516} is an apocalyptic number.

It is an amenable number.

31315660103516 is a deficient number, since it is larger than the sum of its proper divisors (27827670287524).

31315660103516 is a wasteful number, since it uses less digits than its factorization.

31315660103516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13723 (or 13721 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 41.

Adding to 31315660103516 its reverse (61530106651313), we get a palindrome (92845766754829).

The spelling of 31315660103516 in words is "thirty-one trillion, three hundred fifteen billion, six hundred sixty million, one hundred three thousand, five hundred sixteen".