331722404 has 12 divisors (see below), whose sum is σ = 625169244. Its totient is φ = 153102624.

The previous prime is 331722401. The next prime is 331722449. The reversal of 331722404 is 404227133.

It can be written as a sum of positive squares in 2 ways, for example, as 41088100 + 290634304 = 6410^2 + 17048^2 .

It is a super-2 number, since 2×331722404² = 220079506631078432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (331722401) 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, 3189587 + ... + 3189690.

It is an arithmetic number, because the mean of its divisors is an integer number (52097437).

Almost surely, 2^331722404 is an apocalyptic number.

It is an amenable number.

331722404 is a deficient number, since it is larger than the sum of its proper divisors (293446840).

331722404 is a wasteful number, since it uses less digits than its factorization.

331722404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6379294 (or 6379292 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 331722404 is about 18213.2480354274. The cubic root of 331722404 is about 692.2425141513.

Adding to 331722404 its reverse (404227133), we get a palindrome (735949537).

The spelling of 331722404 in words is "three hundred thirty-one million, seven hundred twenty-two thousand, four hundred four".