31320424113 has 32 divisors (see below), whose sum is σ = 49540533120. Its totient is φ = 17382620160.

The previous prime is 31320424073. The next prime is 31320424171. The reversal of 31320424113 is 31142402313.

It is a happy number.

It is not a de Polignac number, because 31320424113 - 2²⁰ = 31319375537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31320414113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 733698 + ... + 775211.

It is an arithmetic number, because the mean of its divisors is an integer number (1548141660).

Almost surely, 2^31320424113 is an apocalyptic number.

31320424113 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31320424113 is a deficient number, since it is larger than the sum of its proper divisors (18220109007).

31320424113 is a wasteful number, since it uses less digits than its factorization.

31320424113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508977.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31320424113 its reverse (31142402313), we get a palindrome (62462826426).

The spelling of 31320424113 in words is "thirty-one billion, three hundred twenty million, four hundred twenty-four thousand, one hundred thirteen".