31612522406 has 4 divisors (see below), whose sum is σ = 47418783612. Its totient is φ = 15806261202.

The previous prime is 31612522393. The next prime is 31612522427. The reversal of 31612522406 is 60422521613.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60422521613 = 131 ⋅461240623.

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, 7903130600 + ... + 7903130603.

It is an arithmetic number, because the mean of its divisors is an integer number (11854695903).

Almost surely, 2^31612522406 is an apocalyptic number.

31612522406 is a deficient number, since it is larger than the sum of its proper divisors (15806261206).

31612522406 is a wasteful number, since it uses less digits than its factorization.

31612522406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15806261205.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 31612522406 in words is "thirty-one billion, six hundred twelve million, five hundred twenty-two thousand, four hundred six".