1310677021 has 2 divisors, whose sum is σ = 1310677022. Its totient is φ = 1310677020.

The previous prime is 1310677013. The next prime is 1310677061. The reversal of 1310677021 is 1207760131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 722856996 + 587820025 = 26886^2 + 24245^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310677021 - 2³ = 1310677013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310677061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655338510 + 655338511.

It is an arithmetic number, because the mean of its divisors is an integer number (655338511).

Almost surely, 2^1310677021 is an apocalyptic number.

It is an amenable number.

1310677021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310677021 is an equidigital number, since it uses as much as digits as its factorization.

1310677021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 1310677021 is about 36203.2736226988. The cubic root of 1310677021 is about 1094.3726439819.

The spelling of 1310677021 in words is "one billion, three hundred ten million, six hundred seventy-seven thousand, twenty-one".