1310199973 has 2 divisors, whose sum is σ = 1310199974. Its totient is φ = 1310199972.

The previous prime is 1310199959. The next prime is 1310199997. The reversal of 1310199973 is 3799910131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 962116324 + 348083649 = 31018^2 + 18657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1310199973 is a prime.

It is a super-5 number, since 5×1310199973⁵ (a number of 47 digits) contains 55555 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310199923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655099986 + 655099987.

It is an arithmetic number, because the mean of its divisors is an integer number (655099987).

Almost surely, 2^1310199973 is an apocalyptic number.

It is an amenable number.

1310199973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310199973 is an equidigital number, since it uses as much as digits as its factorization.

1310199973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45927, while the sum is 43.

The square root of 1310199973 is about 36196.6845581194. The cubic root of 1310199973 is about 1094.2398546868.

The spelling of 1310199973 in words is "one billion, three hundred ten million, one hundred ninety-nine thousand, nine hundred seventy-three".