1331320374 has 20 divisors (see below), whose sum is σ = 2983144164. Its totient is φ = 443773404.

The previous prime is 1331320373. The next prime is 1331320387. The reversal of 1331320374 is 4730231331.

1331320374 is a `hidden beast` number, since 1 + 331 + 320 + 3 + 7 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331320373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4108852 + ... + 4109175.

Almost surely, 2^1331320374 is an apocalyptic number.

1331320374 is an abundant number, since it is smaller than the sum of its proper divisors (1651823790).

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

1331320374 is an equidigital number, since it uses as much as digits as its factorization.

1331320374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8218041 (or 8218032 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 27.

The square root of 1331320374 is about 36487.2631749766. The cubic root of 1331320374 is about 1100.0882502200.

The spelling of 1331320374 in words is "one billion, three hundred thirty-one million, three hundred twenty thousand, three hundred seventy-four".