1315870320 has 80 divisors (see below), whose sum is σ = 4118879232. Its totient is φ = 347485440.

The previous prime is 1315870313. The next prime is 1315870337. The reversal of 1315870320 is 230785131.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1896 + ... + 51335.

Almost surely, 2^1315870320 is an apocalyptic number.

1315870320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1315870320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2059439616).

1315870320 is an abundant number, since it is smaller than the sum of its proper divisors (2803008912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1315870320 is a wasteful number, since it uses less digits than its factorization.

1315870320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53350 (or 53344 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1315870320 is about 36274.9268779415. The cubic root of 1315870320 is about 1095.8161509865.

It can be divided in two parts, 131 and 5870320, that added together give a triangular number (5870451 = T₃₄₂₆).

The spelling of 1315870320 in words is "one billion, three hundred fifteen million, eight hundred seventy thousand, three hundred twenty".