331234421 has 16 divisors (see below), whose sum is σ = 382060800. Its totient is φ = 281299200.

The previous prime is 331234403. The next prime is 331234447. The reversal of 331234421 is 124432133.

It is not a de Polignac number, because 331234421 - 2²² = 327040117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331234451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 552680 + ... + 553278.

It is an arithmetic number, because the mean of its divisors is an integer number (23878800).

Almost surely, 2^331234421 is an apocalyptic number.

It is an amenable number.

331234421 is a deficient number, since it is larger than the sum of its proper divisors (50826379).

331234421 is a wasteful number, since it uses less digits than its factorization.

331234421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204.

The product of its digits is 1728, while the sum is 23.

The square root of 331234421 is about 18199.8467301239. The cubic root of 331234421 is about 691.9029045333.

Adding to 331234421 its reverse (124432133), we get a palindrome (455666554).

The spelling of 331234421 in words is "three hundred thirty-one million, two hundred thirty-four thousand, four hundred twenty-one".