31613020316 has 24 divisors (see below), whose sum is σ = 57201799536. Its totient is φ = 15276855680.

The previous prime is 31613020303. The next prime is 31613020331. The reversal of 31613020316 is 61302031613.

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, 883211 + ... + 918306.

It is an arithmetic number, because the mean of its divisors is an integer number (2383408314).

Almost surely, 2^31613020316 is an apocalyptic number.

It is an amenable number.

31613020316 is a deficient number, since it is larger than the sum of its proper divisors (25588779220).

31613020316 is a wasteful number, since it uses less digits than its factorization.

31613020316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801669 (or 1801667 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 31613020316 its reverse (61302031613), we get a palindrome (92915051929).

The spelling of 31613020316 in words is "thirty-one billion, six hundred thirteen million, twenty thousand, three hundred sixteen".