231700057 has 2 divisors, whose sum is σ = 231700058. Its totient is φ = 231700056.

The previous prime is 231699991. The next prime is 231700067. The reversal of 231700057 is 750007132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126247696 + 105452361 = 11236^2 + 10269^2 .

It is a cyclic number.

It is not a de Polignac number, because 231700057 - 2⁷ = 231699929 is a prime.

It is not a weakly prime, because it can be changed into another prime (231700067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115850028 + 115850029.

It is an arithmetic number, because the mean of its divisors is an integer number (115850029).

Almost surely, 2^231700057 is an apocalyptic number.

It is an amenable number.

231700057 is a deficient number, since it is larger than the sum of its proper divisors (1).

231700057 is an equidigital number, since it uses as much as digits as its factorization.

231700057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 231700057 is about 15221.6969159158. The cubic root of 231700057 is about 614.1984463606.

Adding to 231700057 its reverse (750007132), we get a palindrome (981707189).

The spelling of 231700057 in words is "two hundred thirty-one million, seven hundred thousand, fifty-seven".