331534402 has 12 divisors (see below), whose sum is σ = 503695206. Its totient is φ = 163662720.

The previous prime is 331534349. The next prime is 331534403. The reversal of 331534402 is 204435133.

It can be written as a sum of positive squares in only one way, i.e., 227677921 + 103856481 = 15089^2 + 10191^2 .

It is not an unprimeable number, because it can be changed into a prime (331534403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 799 + ... + 25762.

Almost surely, 2^331534402 is an apocalyptic number.

331534402 is a deficient number, since it is larger than the sum of its proper divisors (172160804).

331534402 is an equidigital number, since it uses as much as digits as its factorization.

331534402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26721 (or 26642 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 331534402 is about 18208.0861707100. The cubic root of 331534402 is about 692.1117144533. Note that the first 3 decimals are identical.

Adding to 331534402 its reverse (204435133), we get a palindrome (535969535).

The spelling of 331534402 in words is "three hundred thirty-one million, five hundred thirty-four thousand, four hundred two".