31425613643613 has 16 divisors (see below), whose sum is σ = 47899602320000. Its totient is φ = 17952636151296.

The previous prime is 31425613643561. The next prime is 31425613643621. The reversal of 31425613643613 is 31634631652413.

It is a happy number.

It is not a de Polignac number, because 31425613643613 - 2¹² = 31425613639517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31425613643663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202310488 + ... + 202465761.

It is an arithmetic number, because the mean of its divisors is an integer number (2993725145000).

Almost surely, 2^{31425613643613} is an apocalyptic number.

It is an amenable number.

31425613643613 is a deficient number, since it is larger than the sum of its proper divisors (16473988676387).

31425613643613 is a wasteful number, since it uses less digits than its factorization.

31425613643613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404779956.

The product of its digits is 2799360, while the sum is 48.

The spelling of 31425613643613 in words is "thirty-one trillion, four hundred twenty-five billion, six hundred thirteen million, six hundred forty-three thousand, six hundred thirteen".