1315560381 has 8 divisors (see below), whose sum is σ = 1754556960. Its totient is φ = 876802032.

The previous prime is 1315560373. The next prime is 1315560397. The reversal of 1315560381 is 1830655131.

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

It is not a de Polignac number, because 1315560381 - 2³ = 1315560373 is a prime.

It is a super-2 number, since 2×1315560381² = 3461398232113730322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315560781) 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, 46246 + ... + 69063.

It is an arithmetic number, because the mean of its divisors is an integer number (219319620).

Almost surely, 2^1315560381 is an apocalyptic number.

It is an amenable number.

1315560381 is a deficient number, since it is larger than the sum of its proper divisors (438996579).

1315560381 is a wasteful number, since it uses less digits than its factorization.

1315560381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119115.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 1315560381 is about 36270.6545433081. The cubic root of 1315560381 is about 1095.7301083560.

It can be divided in two parts, 13155 and 60381, that added together give a triangular number (73536 = T₃₈₃).

The spelling of 1315560381 in words is "one billion, three hundred fifteen million, five hundred sixty thousand, three hundred eighty-one".