331430434 has 4 divisors (see below), whose sum is σ = 497145654. Its totient is φ = 165715216.

The previous prime is 331430431. The next prime is 331430443. The reversal of 331430434 is 434034133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 331349209 + 81225 = 18203^2 + 285^2 .

It is a super-2 number, since 2×331430434² = 219692265162856712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331430399 and 331430408.

It is not an unprimeable number, because it can be changed into a prime (331430431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82857607 + ... + 82857610.

Almost surely, 2^331430434 is an apocalyptic number.

331430434 is a deficient number, since it is larger than the sum of its proper divisors (165715220).

331430434 is a wasteful number, since it uses less digits than its factorization.

331430434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165715219.

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 331430434 is about 18205.2309515699. The cubic root of 331430434 is about 692.0393589718.

Adding to 331430434 its reverse (434034133), we get a palindrome (765464567).

The spelling of 331430434 in words is "three hundred thirty-one million, four hundred thirty thousand, four hundred thirty-four".