31678952256 has 280 divisors, whose sum is σ = 111025960320. Its totient is φ = 8738731008.

The previous prime is 31678952219. The next prime is 31678952269. The reversal of 31678952256 is 65225987613.

31678952256 is a `hidden beast` number, since 3 + 1 + 67 + 8 + 9 + 522 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1037301 + ... + 1067403.

Almost surely, 2^31678952256 is an apocalyptic number.

31678952256 is a gapful number since it is divisible by the number (36) 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 31678952256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55512980160).

31678952256 is an abundant number, since it is smaller than the sum of its proper divisors (79347008064).

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

31678952256 is a wasteful number, since it uses less digits than its factorization.

31678952256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30163 (or 30144 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 31678952256 in words is "thirty-one billion, six hundred seventy-eight million, nine hundred fifty-two thousand, two hundred fifty-six".