331431401 has 24 divisors (see below), whose sum is σ = 401618880. Its totient is φ = 267605856.

The previous prime is 331431341. The next prime is 331431407. The reversal of 331431401 is 104134133.

It is not a de Polignac number, because 331431401 - 2¹⁰ = 331430377 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 (331431407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 374906 + ... + 375788.

It is an arithmetic number, because the mean of its divisors is an integer number (16734120).

Almost surely, 2^331431401 is an apocalyptic number.

It is an amenable number.

331431401 is a deficient number, since it is larger than the sum of its proper divisors (70187479).

331431401 is an equidigital number, since it uses as much as digits as its factorization.

331431401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005 (or 962 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 331431401 is about 18205.2575098514. The cubic root of 331431401 is about 692.0400320154.

Adding to 331431401 its reverse (104134133), we get a palindrome (435565534).

The spelling of 331431401 in words is "three hundred thirty-one million, four hundred thirty-one thousand, four hundred one".