1231413404239 has 2 divisors, whose sum is σ = 1231413404240. Its totient is φ = 1231413404238.

The previous prime is 1231413404213. The next prime is 1231413404261. The reversal of 1231413404239 is 9324043141321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1231413404239 - 2¹⁹ = 1231412879951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1231413404198 and 1231413404207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231413404279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615706702119 + 615706702120.

It is an arithmetic number, because the mean of its divisors is an integer number (615706702120).

Almost surely, 2^{1231413404239} is an apocalyptic number.

1231413404239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231413404239 is an equidigital number, since it uses as much as digits as its factorization.

1231413404239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 1231413404239 in words is "one trillion, two hundred thirty-one billion, four hundred thirteen million, four hundred four thousand, two hundred thirty-nine".