1231150057 has 2 divisors, whose sum is σ = 1231150058. Its totient is φ = 1231150056.

The previous prime is 1231150051. The next prime is 1231150097. The reversal of 1231150057 is 7500511321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1209022441 + 22127616 = 34771^2 + 4704^2 .

It is an emirp because it is prime and its reverse (7500511321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1231150057 - 2⁷ = 1231149929 is a prime.

It is a super-2 number, since 2×1231150057² = 3031460925702206498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1231150051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615575028 + 615575029.

It is an arithmetic number, because the mean of its divisors is an integer number (615575029).

Almost surely, 2^1231150057 is an apocalyptic number.

It is an amenable number.

1231150057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231150057 is an equidigital number, since it uses as much as digits as its factorization.

1231150057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 1231150057 is about 35087.7479613611. The cubic root of 1231150057 is about 1071.7751002295.

Adding to 1231150057 its reverse (7500511321), we get a palindrome (8731661378).

The spelling of 1231150057 in words is "one billion, two hundred thirty-one million, one hundred fifty thousand, fifty-seven".