31115345054 has 4 divisors (see below), whose sum is σ = 46673017584. Its totient is φ = 15557672526.

The previous prime is 31115345039. The next prime is 31115345069. The reversal of 31115345054 is 45054351113.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (31115345039) and next prime (31115345069).

It is a self number, because there is not a number n which added to its sum of digits gives 31115345054.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7778836262 + ... + 7778836265.

It is an arithmetic number, because the mean of its divisors is an integer number (11668254396).

Almost surely, 2^31115345054 is an apocalyptic number.

31115345054 is a deficient number, since it is larger than the sum of its proper divisors (15557672530).

31115345054 is a wasteful number, since it uses less digits than its factorization.

31115345054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15557672529.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 31115345054 its reverse (45054351113), we get a palindrome (76169696167).

The spelling of 31115345054 in words is "thirty-one billion, one hundred fifteen million, three hundred forty-five thousand, fifty-four".