31144453113 has 4 divisors (see below), whose sum is σ = 41525937488. Its totient is φ = 20762968740.

The previous prime is 31144453037. The next prime is 31144453139. The reversal of 31144453113 is 31135444113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 31144453113 - 2²⁵ = 31110898681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31144453183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5190742183 + ... + 5190742188.

It is an arithmetic number, because the mean of its divisors is an integer number (10381484372).

Almost surely, 2^31144453113 is an apocalyptic number.

It is an amenable number.

31144453113 is a deficient number, since it is larger than the sum of its proper divisors (10381484375).

31144453113 is a wasteful number, since it uses less digits than its factorization.

31144453113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10381484374.

The product of its digits is 8640, while the sum is 30.

Adding to 31144453113 its reverse (31135444113), we get a palindrome (62279897226).

The spelling of 31144453113 in words is "thirty-one billion, one hundred forty-four million, four hundred fifty-three thousand, one hundred thirteen".