331475887 has 4 divisors (see below), whose sum is σ = 342906120. Its totient is φ = 320045656.

The previous prime is 331475873. The next prime is 331475899. The reversal of 331475887 is 788574133.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331475887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331475087) 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, 5715073 + ... + 5715130.

It is an arithmetic number, because the mean of its divisors is an integer number (85726530).

Almost surely, 2^331475887 is an apocalyptic number.

331475887 is a deficient number, since it is larger than the sum of its proper divisors (11430233).

331475887 is a wasteful number, since it uses less digits than its factorization.

331475887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11430232.

The product of its digits is 564480, while the sum is 46.

The square root of 331475887 is about 18206.4792587694. The cubic root of 331475887 is about 692.0709933902.

The spelling of 331475887 in words is "three hundred thirty-one million, four hundred seventy-five thousand, eight hundred eighty-seven".