331401043 has 24 divisors (see below), whose sum is σ = 375783408. Its totient is φ = 291067392.

The previous prime is 331401029. The next prime is 331401071. The reversal of 331401043 is 340104133.

It is not a de Polignac number, because 331401043 - 2²⁵ = 297846611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331401043.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331401013) 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, 386271 + ... + 387127.

It is an arithmetic number, because the mean of its divisors is an integer number (15657642).

Almost surely, 2^331401043 is an apocalyptic number.

331401043 is a deficient number, since it is larger than the sum of its proper divisors (44382365).

331401043 is a wasteful number, since it uses less digits than its factorization.

331401043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963 (or 940 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 331401043 is about 18204.4237206235. The cubic root of 331401043 is about 692.0189018582.

Adding to 331401043 its reverse (340104133), we get a palindrome (671505176).

The spelling of 331401043 in words is "three hundred thirty-one million, four hundred one thousand, forty-three".