12031016639 has 2 divisors, whose sum is σ = 12031016640. Its totient is φ = 12031016638.

The previous prime is 12031016633. The next prime is 12031016653. The reversal of 12031016639 is 93661013021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12031016639 - 2⁸ = 12031016383 is a prime.

It is a super-2 number, since 2×12031016639² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12031016633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6015508319 + 6015508320.

It is an arithmetic number, because the mean of its divisors is an integer number (6015508320).

Almost surely, 2^12031016639 is an apocalyptic number.

12031016639 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031016639 is an equidigital number, since it uses as much as digits as its factorization.

12031016639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The spelling of 12031016639 in words is "twelve billion, thirty-one million, sixteen thousand, six hundred thirty-nine".