1331875697 has 4 divisors (see below), whose sum is σ = 1389783360. Its totient is φ = 1273968036.

The previous prime is 1331875691. The next prime is 1331875709. The reversal of 1331875697 is 7965781331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1331875697 - 2⁴ = 1331875681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331875691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28953797 + ... + 28953842.

It is an arithmetic number, because the mean of its divisors is an integer number (347445840).

Almost surely, 2^1331875697 is an apocalyptic number.

It is an amenable number.

1331875697 is a deficient number, since it is larger than the sum of its proper divisors (57907663).

1331875697 is an equidigital number, since it uses as much as digits as its factorization.

1331875697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57907662.

The product of its digits is 952560, while the sum is 50.

The square root of 1331875697 is about 36494.8722014477. The cubic root of 1331875697 is about 1100.2411859567.

The spelling of 1331875697 in words is "one billion, three hundred thirty-one million, eight hundred seventy-five thousand, six hundred ninety-seven".