31297390619018 has 8 divisors (see below), whose sum is σ = 46946287074720. Its totient is φ = 15648628260780.

The previous prime is 31297390618969. The next prime is 31297390619051. The reversal of 31297390619018 is 81091609379213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32938838 + ... + 33875681.

It is an arithmetic number, because the mean of its divisors is an integer number (5868285884340).

Almost surely, 2^{31297390619018} is an apocalyptic number.

31297390619018 is a deficient number, since it is larger than the sum of its proper divisors (15648896455702).

31297390619018 is a wasteful number, since it uses less digits than its factorization.

31297390619018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67048732.

The product of its (nonzero) digits is 4408992, while the sum is 59.

The spelling of 31297390619018 in words is "thirty-one trillion, two hundred ninety-seven billion, three hundred ninety million, six hundred nineteen thousand, eighteen".