31662426613 has 8 divisors (see below), whose sum is σ = 31718718720. Its totient is φ = 31606167600.

The previous prime is 31662426581. The next prime is 31662426659.

It is a happy number.

31662426613 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 not a de Polignac number, because 31662426613 - 2⁵ = 31662426581 is a prime.

It is a super-2 number, since 2×31662426613² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31662426683) 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, 2606568 + ... + 2618686.

It is an arithmetic number, because the mean of its divisors is an integer number (3964839840).

Almost surely, 2^31662426613 is an apocalyptic number.

It is an amenable number.

31662426613 is a deficient number, since it is larger than the sum of its proper divisors (56292107).

31662426613 is a wasteful number, since it uses less digits than its factorization.

31662426613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16547.

The product of its digits is 186624, while the sum is 40.

The spelling of 31662426613 in words is "thirty-one billion, six hundred sixty-two million, four hundred twenty-six thousand, six hundred thirteen".