31151340775 has 12 divisors (see below), whose sum is σ = 38829907584. Its totient is φ = 24790592000.

The previous prime is 31151340763. The next prime is 31151340827. The reversal of 31151340775 is 57704315113.

It is not a de Polignac number, because 31151340775 - 2³³ = 22561406183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3257146 + ... + 3266695.

It is an arithmetic number, because the mean of its divisors is an integer number (3235825632).

Almost surely, 2^31151340775 is an apocalyptic number.

31151340775 is a deficient number, since it is larger than the sum of its proper divisors (7678566809).

31151340775 is a wasteful number, since it uses less digits than its factorization.

31151340775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6524042 (or 6524037 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 37.

Adding to 31151340775 its reverse (57704315113), we get a palindrome (88855655888).

The spelling of 31151340775 in words is "thirty-one billion, one hundred fifty-one million, three hundred forty thousand, seven hundred seventy-five".