231134087 has 2 divisors, whose sum is σ = 231134088. Its totient is φ = 231134086.

The previous prime is 231134027. The next prime is 231134117. The reversal of 231134087 is 780431132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231134087 - 2²⁴ = 214356871 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231134027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115567043 + 115567044.

It is an arithmetic number, because the mean of its divisors is an integer number (115567044).

Almost surely, 2^231134087 is an apocalyptic number.

231134087 is a deficient number, since it is larger than the sum of its proper divisors (1).

231134087 is an equidigital number, since it uses as much as digits as its factorization.

231134087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 231134087 is about 15203.0946520766. The cubic root of 231134087 is about 613.6979410606.

The spelling of 231134087 in words is "two hundred thirty-one million, one hundred thirty-four thousand, eighty-seven".