31424033113 has 12 divisors (see below), whose sum is σ = 34583269140. Its totient is φ = 28531902080.

The previous prime is 31424033083. The next prime is 31424033161. The reversal of 31424033113 is 31133042413.

It can be written as a sum of positive squares in 2 ways, for example, as 27308554009 + 4115479104 = 165253^2 + 64152^2 .

It is a de Polignac number, because none of the positive numbers 2^k-31424033113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31424333113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62620 + ... + 258397.

It is an arithmetic number, because the mean of its divisors is an integer number (2881939095).

Almost surely, 2^31424033113 is an apocalyptic number.

It is an amenable number.

31424033113 is a deficient number, since it is larger than the sum of its proper divisors (3159236027).

31424033113 is a wasteful number, since it uses less digits than its factorization.

31424033113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321848 (or 321837 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31424033113 its reverse (31133042413), we get a palindrome (62557075526).

The spelling of 31424033113 in words is "thirty-one billion, four hundred twenty-four million, thirty-three thousand, one hundred thirteen".