31121696422 has 4 divisors (see below), whose sum is σ = 46682544636. Its totient is φ = 15560848210.

The previous prime is 31121696413. The next prime is 31121696453. The reversal of 31121696422 is 22469612113.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7780424104 + ... + 7780424107.

It is an arithmetic number, because the mean of its divisors is an integer number (11670636159).

Almost surely, 2^31121696422 is an apocalyptic number.

31121696422 is a deficient number, since it is larger than the sum of its proper divisors (15560848214).

31121696422 is a wasteful number, since it uses less digits than its factorization.

31121696422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15560848213.

The product of its digits is 31104, while the sum is 37.

The spelling of 31121696422 in words is "thirty-one billion, one hundred twenty-one million, six hundred ninety-six thousand, four hundred twenty-two".