1315981337 has 8 divisors (see below), whose sum is σ = 1449034272. Its totient is φ = 1185164800.

The previous prime is 1315981327. The next prime is 1315981367. The reversal of 1315981337 is 7331895131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1315981337 - 2²⁶ = 1248872473 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1315981294 and 1315981303.

It is not an unprimeable number, because it can be changed into a prime (1315981327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557864 + ... + 560217.

It is an arithmetic number, because the mean of its divisors is an integer number (181129284).

Almost surely, 2^1315981337 is an apocalyptic number.

It is an amenable number.

1315981337 is a deficient number, since it is larger than the sum of its proper divisors (133052935).

1315981337 is a wasteful number, since it uses less digits than its factorization.

1315981337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118199.

The product of its digits is 68040, while the sum is 41.

The square root of 1315981337 is about 36276.4570623979. The cubic root of 1315981337 is about 1095.8469672959.

The spelling of 1315981337 in words is "one billion, three hundred fifteen million, nine hundred eighty-one thousand, three hundred thirty-seven".