31354378892 has 12 divisors (see below), whose sum is σ = 57758066520. Its totient is φ = 14852074176.

The previous prime is 31354378813. The next prime is 31354378903. The reversal of 31354378892 is 29887345313.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206278733 + ... + 206278884.

It is an arithmetic number, because the mean of its divisors is an integer number (4813172210).

Almost surely, 2^31354378892 is an apocalyptic number.

It is an amenable number.

31354378892 is a deficient number, since it is larger than the sum of its proper divisors (26403687628).

31354378892 is a wasteful number, since it uses less digits than its factorization.

31354378892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412557640 (or 412557638 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 53.

The spelling of 31354378892 in words is "thirty-one billion, three hundred fifty-four million, three hundred seventy-eight thousand, eight hundred ninety-two".