31145454113 has 4 divisors (see below), whose sum is σ = 32784688560. Its totient is φ = 29506219668.

The previous prime is 31145454089. The next prime is 31145454157.

31145454113 is nontrivially palindromic in base 10.

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 a cyclic number.

It is not a de Polignac number, because 31145454113 - 2⁶ = 31145454049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31145454113.

It is not an unprimeable number, because it can be changed into a prime (31145450113) 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, 819617195 + ... + 819617232.

It is an arithmetic number, because the mean of its divisors is an integer number (8196172140).

Almost surely, 2^31145454113 is an apocalyptic number.

It is an amenable number.

31145454113 is a deficient number, since it is larger than the sum of its proper divisors (1639234447).

31145454113 is a wasteful number, since it uses less digits than its factorization.

31145454113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639234446.

The product of its digits is 14400, while the sum is 32.

The spelling of 31145454113 in words is "thirty-one billion, one hundred forty-five million, four hundred fifty-four thousand, one hundred thirteen".