1313061901 has 2 divisors, whose sum is σ = 1313061902. Its totient is φ = 1313061900.

The previous prime is 1313061857. The next prime is 1313061907. The reversal of 1313061901 is 1091603131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1202286276 + 110775625 = 34674^2 + 10525^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313061901 - 2⁷ = 1313061773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313061907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656530950 + 656530951.

It is an arithmetic number, because the mean of its divisors is an integer number (656530951).

Almost surely, 2^1313061901 is an apocalyptic number.

It is an amenable number.

1313061901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313061901 is an equidigital number, since it uses as much as digits as its factorization.

1313061901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 1313061901 is about 36236.1960062035. The cubic root of 1313061901 is about 1095.0360075174.

The spelling of 1313061901 in words is "one billion, three hundred thirteen million, sixty-one thousand, nine hundred one".