331535013 has 4 divisors (see below), whose sum is σ = 442046688. Its totient is φ = 221023340.

The previous prime is 331535011. The next prime is 331535021. The reversal of 331535013 is 310535133.

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, and also an emirpimes, since its reverse is a distinct semiprime: 310535133 = 3 ⋅103511711.

It is a cyclic number.

It is not a de Polignac number, because 331535013 - 2¹ = 331535011 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331535011) 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, 55255833 + ... + 55255838.

It is an arithmetic number, because the mean of its divisors is an integer number (110511672).

Almost surely, 2^331535013 is an apocalyptic number.

It is an amenable number.

331535013 is a deficient number, since it is larger than the sum of its proper divisors (110511675).

331535013 is a wasteful number, since it uses less digits than its factorization.

331535013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110511674.

The product of its (nonzero) digits is 2025, while the sum is 24.

The square root of 331535013 is about 18208.1029489620. The cubic root of 331535013 is about 692.1121396279.

The spelling of 331535013 in words is "three hundred thirty-one million, five hundred thirty-five thousand, thirteen".