1310119981 has 2 divisors, whose sum is σ = 1310119982. Its totient is φ = 1310119980.

The previous prime is 1310119973. The next prime is 1310120003. The reversal of 1310119981 is 1899110131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1163492100 + 146627881 = 34110^2 + 12109^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310119981 - 2³ = 1310119973 is a prime.

It is a super-2 number, since 2×1310119981² = 3432828729230880722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310119931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655059990 + 655059991.

It is an arithmetic number, because the mean of its divisors is an integer number (655059991).

Almost surely, 2^1310119981 is an apocalyptic number.

It is an amenable number.

1310119981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310119981 is an equidigital number, since it uses as much as digits as its factorization.

1310119981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 34.

The square root of 1310119981 is about 36195.5795781750. The cubic root of 1310119981 is about 1094.2175852578.

The spelling of 1310119981 in words is "one billion, three hundred ten million, one hundred nineteen thousand, nine hundred eighty-one".