331428537 has 32 divisors (see below), whose sum is σ = 547061760. Its totient is φ = 196583760.

The previous prime is 331428527. The next prime is 331428553. The reversal of 331428537 is 735824133.

It is not a de Polignac number, because 331428537 - 2⁶ = 331428473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (331428527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2088 + ... + 25830.

It is an arithmetic number, because the mean of its divisors is an integer number (17095680).

Almost surely, 2^331428537 is an apocalyptic number.

It is an amenable number.

331428537 is a deficient number, since it is larger than the sum of its proper divisors (215633223).

331428537 is a wasteful number, since it uses less digits than its factorization.

331428537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23810 (or 23804 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 331428537 is about 18205.1788510852. The cubic root of 331428537 is about 692.0380386332.

The spelling of 331428537 in words is "three hundred thirty-one million, four hundred twenty-eight thousand, five hundred thirty-seven".