1312453157 has 2 divisors, whose sum is σ = 1312453158. Its totient is φ = 1312453156.

The previous prime is 1312453097. The next prime is 1312453183. The reversal of 1312453157 is 7513542131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 799249441 + 513203716 = 28271^2 + 22654^2 .

It is an emirp because it is prime and its reverse (7513542131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1312453157 - 2¹⁰ = 1312452133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312453657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656226578 + 656226579.

It is an arithmetic number, because the mean of its divisors is an integer number (656226579).

Almost surely, 2^1312453157 is an apocalyptic number.

It is an amenable number.

1312453157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312453157 is an equidigital number, since it uses as much as digits as its factorization.

1312453157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 32.

The square root of 1312453157 is about 36227.7953648852. The cubic root of 1312453157 is about 1094.8667594319.

Adding to 1312453157 its reverse (7513542131), we get a palindrome (8825995288).

The spelling of 1312453157 in words is "one billion, three hundred twelve million, four hundred fifty-three thousand, one hundred fifty-seven".