1231032021239 has 2 divisors, whose sum is σ = 1231032021240. Its totient is φ = 1231032021238.

The previous prime is 1231032021229. The next prime is 1231032021277. The reversal of 1231032021239 is 9321202301321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1231032021239 - 2²⁰ = 1231030972663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231032021229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615516010619 + 615516010620.

It is an arithmetic number, because the mean of its divisors is an integer number (615516010620).

Almost surely, 2^{1231032021239} is an apocalyptic number.

1231032021239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231032021239 is an equidigital number, since it uses as much as digits as its factorization.

1231032021239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 1231032021239 in words is "one trillion, two hundred thirty-one billion, thirty-two million, twenty-one thousand, two hundred thirty-nine".