31423961913696 has 288 divisors, whose sum is σ = 103199953500000. Its totient is φ = 9290157465600.

The previous prime is 31423961913691. The next prime is 31423961913761. The reversal of 31423961913696 is 69631916932413.

31423961913696 is a `hidden beast` number, since 3 + 1 + 4 + 2 + 3 + 9 + 619 + 1 + 3 + 6 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31423961913691) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 620680 + ... + 7951928.

It is an arithmetic number, because the mean of its divisors is an integer number (358333171875).

Almost surely, 2^{31423961913696} is an apocalyptic number.

31423961913696 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 31423961913696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51599976750000).

31423961913696 is an abundant number, since it is smaller than the sum of its proper divisors (71775991586304).

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

31423961913696 is a wasteful number, since it uses less digits than its factorization.

31423961913696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7331331 (or 7331306 counting only the distinct ones).

The product of its digits is 34012224, while the sum is 63.

The spelling of 31423961913696 in words is "thirty-one trillion, four hundred twenty-three billion, nine hundred sixty-one million, nine hundred thirteen thousand, six hundred ninety-six".