31426528836 has 12 divisors (see below), whose sum is σ = 73328567312. Its totient is φ = 10475509608.

The previous prime is 31426528799. The next prime is 31426528867. The reversal of 31426528836 is 63882562413.

It is a tau number, because it is divible by the number of its divisors (12).

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, 1309438690 + ... + 1309438713.

Almost surely, 2^31426528836 is an apocalyptic number.

It is an amenable number.

31426528836 is an abundant number, since it is smaller than the sum of its proper divisors (41902038476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31426528836 is a wasteful number, since it uses less digits than its factorization.

31426528836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618877410 (or 2618877408 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 48.

The spelling of 31426528836 in words is "thirty-one billion, four hundred twenty-six million, five hundred twenty-eight thousand, eight hundred thirty-six".