1312101977 has 2 divisors, whose sum is σ = 1312101978. Its totient is φ = 1312101976.

The previous prime is 1312101971. The next prime is 1312101983. The reversal of 1312101977 is 7791012131.

It is a balanced prime because it is at equal distance from previous prime (1312101971) and next prime (1312101983).

It can be written as a sum of positive squares in only one way, i.e., 882327616 + 429774361 = 29704^2 + 20731^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312101977 - 2³⁰ = 238360153 is a prime.

It is a super-2 number, since 2×1312101977² = 3443223196094617058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1312101971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656050988 + 656050989.

It is an arithmetic number, because the mean of its divisors is an integer number (656050989).

Almost surely, 2^1312101977 is an apocalyptic number.

It is an amenable number.

1312101977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312101977 is an equidigital number, since it uses as much as digits as its factorization.

1312101977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 32.

The square root of 1312101977 is about 36222.9482096640. The cubic root of 1312101977 is about 1094.7690976334.

The spelling of 1312101977 in words is "one billion, three hundred twelve million, one hundred one thousand, nine hundred seventy-seven".