31424326656 has 264 divisors, whose sum is σ = 89273338224. Its totient is φ = 9824010240.

The previous prime is 31424326621. The next prime is 31424326693. The reversal of 31424326656 is 65662342413.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99130210 + ... + 99130526.

Almost surely, 2^31424326656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31424326656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44636669112).

31424326656 is an abundant number, since it is smaller than the sum of its proper divisors (57849011568).

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

31424326656 is a wasteful number, since it uses less digits than its factorization.

31424326656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 406 counting only the distinct ones).

The product of its digits is 622080, while the sum is 42.

The spelling of 31424326656 in words is "thirty-one billion, four hundred twenty-four million, three hundred twenty-six thousand, six hundred fifty-six".