31422236672 has 36 divisors (see below), whose sum is σ = 62845174665. Its totient is φ = 15707107328.

The previous prime is 31422236663. The next prime is 31422236707. The reversal of 31422236672 is 27663222413.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 28041511936 + 3380724736 = 167456^2 + 58144^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=125344.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 8020058 + ... + 8023974.

Almost surely, 2^31422236672 is an apocalyptic number.

31422236672 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31422236672

31422236672 is an abundant number, since it is smaller than the sum of its proper divisors (31422937993).

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

31422236672 is an frugal number, since it uses more digits than its factorization.

31422236672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7856 (or 3919 counting only the distinct ones).

The product of its digits is 145152, while the sum is 38.

The spelling of 31422236672 in words is "thirty-one billion, four hundred twenty-two million, two hundred thirty-six thousand, six hundred seventy-two".