1231360057 has 2 divisors, whose sum is σ = 1231360058. Its totient is φ = 1231360056.

The previous prime is 1231360019. The next prime is 1231360063. The reversal of 1231360057 is 7500631321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1206798121 + 24561936 = 34739^2 + 4956^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231360057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231360087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615680028 + 615680029.

It is an arithmetic number, because the mean of its divisors is an integer number (615680029).

Almost surely, 2^1231360057 is an apocalyptic number.

It is an amenable number.

1231360057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231360057 is an equidigital number, since it uses as much as digits as its factorization.

1231360057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 1231360057 is about 35090.7403313182. The cubic root of 1231360057 is about 1071.8360351182.

Adding to 1231360057 its reverse (7500631321), we get a palindrome (8731991378).

The spelling of 1231360057 in words is "one billion, two hundred thirty-one million, three hundred sixty thousand, fifty-seven".