31454112896639 has 4 divisors (see below), whose sum is σ = 31642460878224. Its totient is φ = 31265764915056.

The previous prime is 31454112896629. The next prime is 31454112896669. The reversal of 31454112896639 is 93669821145413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31454112896639 - 2⁴⁴ = 13861926852223 is a prime.

It is a super-2 number, since 2×31454112896639² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31454112896629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94173990542 + ... + 94173990875.

It is an arithmetic number, because the mean of its divisors is an integer number (7910615219556).

Almost surely, 2^{31454112896639} is an apocalyptic number.

31454112896639 is a deficient number, since it is larger than the sum of its proper divisors (188347981585).

31454112896639 is a wasteful number, since it uses less digits than its factorization.

31454112896639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188347981584.

The product of its digits is 33592320, while the sum is 62.

The spelling of 31454112896639 in words is "thirty-one trillion, four hundred fifty-four billion, one hundred twelve million, eight hundred ninety-six thousand, six hundred thirty-nine".