31303311113 has 8 divisors (see below), whose sum is σ = 32506080936. Its totient is φ = 30121459200.

The previous prime is 31303311101. The next prime is 31303311139. The reversal of 31303311113 is 31111330313.

It can be written as a sum of positive squares in 4 ways, for example, as 6716130304 + 24587180809 = 81952^2 + 156803^2 .

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 31303311113 - 2²² = 31299116809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31303311713) 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, 5226428 + ... + 5232413.

It is an arithmetic number, because the mean of its divisors is an integer number (4063260117).

Almost surely, 2^31303311113 is an apocalyptic number.

It is an amenable number.

31303311113 is a deficient number, since it is larger than the sum of its proper divisors (1202769823).

31303311113 is a wasteful number, since it uses less digits than its factorization.

31303311113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10458955.

The product of its (nonzero) digits is 243, while the sum is 20.

Adding to 31303311113 its reverse (31111330313), we get a palindrome (62414641426).

The spelling of 31303311113 in words is "thirty-one billion, three hundred three million, three hundred eleven thousand, one hundred thirteen".