331433421 has 8 divisors (see below), whose sum is σ = 482085024. Its totient is φ = 200868720.

The previous prime is 331433353. The next prime is 331433423. The reversal of 331433421 is 124334133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 331433421 - 2¹⁵ = 331400653 is a prime.

It is a super-2 number, since 2×331433421² = 219696225111526482, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 331433391 and 331433400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331433423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5021686 + ... + 5021751.

It is an arithmetic number, because the mean of its divisors is an integer number (60260628).

Almost surely, 2^331433421 is an apocalyptic number.

It is an amenable number.

331433421 is a deficient number, since it is larger than the sum of its proper divisors (150651603).

331433421 is a wasteful number, since it uses less digits than its factorization.

331433421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10043451.

The product of its digits is 2592, while the sum is 24.

The square root of 331433421 is about 18205.3129882460. The cubic root of 331433421 is about 692.0414379554.

Adding to 331433421 its reverse (124334133), we get a palindrome (455767554).

The spelling of 331433421 in words is "three hundred thirty-one million, four hundred thirty-three thousand, four hundred twenty-one".