2131400239 has 2 divisors, whose sum is σ = 2131400240. Its totient is φ = 2131400238.

The previous prime is 2131400203. The next prime is 2131400251. The reversal of 2131400239 is 9320041312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2131400239 - 2⁷ = 2131400111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131400339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065700119 + 1065700120.

It is an arithmetic number, because the mean of its divisors is an integer number (1065700120).

Almost surely, 2^2131400239 is an apocalyptic number.

2131400239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131400239 is an equidigital number, since it uses as much as digits as its factorization.

2131400239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 2131400239 is about 46167.0904324715. The cubic root of 2131400239 is about 1286.9302323751.

The spelling of 2131400239 in words is "two billion, one hundred thirty-one million, four hundred thousand, two hundred thirty-nine".