331972403 has 12 divisors (see below), whose sum is σ = 390516120. Its totient is φ = 281346912.

The previous prime is 331972339. The next prime is 331972411. The reversal of 331972403 is 304279133.

It is not a de Polignac number, because 331972403 - 2⁶ = 331972339 is a prime.

It is a super-2 number, since 2×331972403² = 220411352707188818, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331972403.

It is not an unprimeable number, because it can be changed into a prime (331972423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33701 + ... + 42422.

It is an arithmetic number, because the mean of its divisors is an integer number (32543010).

Almost surely, 2^331972403 is an apocalyptic number.

331972403 is a deficient number, since it is larger than the sum of its proper divisors (58543717).

331972403 is an equidigital number, since it uses as much as digits as its factorization.

331972403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76226 (or 76219 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 331972403 is about 18220.1098514800. The cubic root of 331972403 is about 692.4163708435.

The spelling of 331972403 in words is "three hundred thirty-one million, nine hundred seventy-two thousand, four hundred three".