31398655689313 has 8 divisors (see below), whose sum is σ = 34253125976160. Its totient is φ = 28544193242880.

The previous prime is 31398655689287. The next prime is 31398655689367.

31398655689313 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31398655689313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31398655687313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9152778 + ... + 12106636.

It is an arithmetic number, because the mean of its divisors is an integer number (4281640747020).

Almost surely, 2^{31398655689313} is an apocalyptic number.

It is an amenable number.

31398655689313 is a deficient number, since it is larger than the sum of its proper divisors (2854470286847).

31398655689313 is a wasteful number, since it uses less digits than its factorization.

31398655689313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3920207.

The product of its digits is 377913600, while the sum is 70.

The spelling of 31398655689313 in words is "thirty-one trillion, three hundred ninety-eight billion, six hundred fifty-five million, six hundred eighty-nine thousand, three hundred thirteen".