31368448761 has 16 divisors (see below), whose sum is σ = 45065825280. Its totient is φ = 19293396480.

The previous prime is 31368448759. The next prime is 31368448799. The reversal of 31368448761 is 16784486313.

It is a happy number.

It is not a de Polignac number, because 31368448761 - 2¹ = 31368448759 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31368448061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139225 + ... + 286566.

It is an arithmetic number, because the mean of its divisors is an integer number (2816614080).

Almost surely, 2^31368448761 is an apocalyptic number.

It is an amenable number.

31368448761 is a deficient number, since it is larger than the sum of its proper divisors (13697376519).

31368448761 is a wasteful number, since it uses less digits than its factorization.

31368448761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427696.

The product of its digits is 2322432, while the sum is 51.

The spelling of 31368448761 in words is "thirty-one billion, three hundred sixty-eight million, four hundred forty-eight thousand, seven hundred sixty-one".