331772346 has 12 divisors (see below), whose sum is σ = 718840122. Its totient is φ = 110590776.

The previous prime is 331772341. The next prime is 331772381. The reversal of 331772346 is 643277133.

It can be written as a sum of positive squares in only one way, i.e., 185096025 + 146676321 = 13605^2 + 12111^2 .

It is a super-2 number, since 2×331772346² = 220145779140687432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 331772346.

It is not an unprimeable number, because it can be changed into a prime (331772341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9215881 + ... + 9215916.

Almost surely, 2^331772346 is an apocalyptic number.

331772346 is an abundant number, since it is smaller than the sum of its proper divisors (387067776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331772346 is a wasteful number, since it uses less digits than its factorization.

331772346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18431805 (or 18431802 counting only the distinct ones).

The product of its digits is 63504, while the sum is 36.

The square root of 331772346 is about 18214.6190187992. The cubic root of 331772346 is about 692.2772522741.

The spelling of 331772346 in words is "three hundred thirty-one million, seven hundred seventy-two thousand, three hundred forty-six".