31454661231216 has 80 divisors (see below), whose sum is σ = 90785348428320. Its totient is φ = 10426959498240.

The previous prime is 31454661231187. The next prime is 31454661231223. The reversal of 31454661231216 is 61213216645413.

31454661231216 is a `hidden beast` number, since 3 + 1 + 4 + 5 + 4 + 6 + 612 + 3 + 1 + 21 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201059145 + ... + 201215528.

It is an arithmetic number, because the mean of its divisors is an integer number (1134816855354).

Almost surely, 2^{31454661231216} is an apocalyptic number.

31454661231216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31454661231216 is an abundant number, since it is smaller than the sum of its proper divisors (59330687197104).

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

31454661231216 is a wasteful number, since it uses less digits than its factorization.

31454661231216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402274871 (or 402274859 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

Adding to 31454661231216 its reverse (61213216645413), we get a palindrome (92667877876629).

The spelling of 31454661231216 in words is "thirty-one trillion, four hundred fifty-four billion, six hundred sixty-one million, two hundred thirty-one thousand, two hundred sixteen".