331386901 has 4 divisors (see below), whose sum is σ = 333916704. Its totient is φ = 328857100.

The previous prime is 331386889. The next prime is 331386917. The reversal of 331386901 is 109683133.

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 331386901 - 2¹³ = 331378709 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 (331386941) 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, 1264705 + ... + 1264966.

It is an arithmetic number, because the mean of its divisors is an integer number (83479176).

Almost surely, 2^331386901 is an apocalyptic number.

It is an amenable number.

331386901 is a deficient number, since it is larger than the sum of its proper divisors (2529803).

331386901 is a wasteful number, since it uses less digits than its factorization.

331386901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2529802.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 331386901 is about 18204.0352944066. The cubic root of 331386901 is about 692.0090581248.

The spelling of 331386901 in words is "three hundred thirty-one million, three hundred eighty-six thousand, nine hundred one".