1331157360 has 160 divisors (see below), whose sum is σ = 4587706368. Its totient is φ = 317076480.

The previous prime is 1331157337. The next prime is 1331157383. The reversal of 1331157360 is 637511331.

It is an interprime number because it is at equal distance from previous prime (1331157337) and next prime (1331157383).

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 31 ways as a sum of consecutive naturals, for example, 89839 + ... + 103601.

Almost surely, 2^1331157360 is an apocalyptic number.

1331157360 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 1331157360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2293853184).

1331157360 is an abundant number, since it is smaller than the sum of its proper divisors (3256549008).

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

1331157360 is a wasteful number, since it uses less digits than its factorization.

1331157360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13823 (or 13817 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 1331157360 is about 36485.0292585877. The cubic root of 1331157360 is about 1100.0433481540.

Adding to 1331157360 its reverse (637511331), we get a palindrome (1968668691).

The spelling of 1331157360 in words is "one billion, three hundred thirty-one million, one hundred fifty-seven thousand, three hundred sixty".