331140431 has 8 divisors (see below), whose sum is σ = 337122000. Its totient is φ = 325209280.

The previous prime is 331140421. The next prime is 331140437. The reversal of 331140431 is 134041133.

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

It is a cyclic number.

It is not a de Polignac number, because 331140431 - 2⁶ = 331140367 is a prime.

It is a super-2 number, since 2×331140431² = 219307970085731522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331140437) 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, 776 + ... + 25746.

It is an arithmetic number, because the mean of its divisors is an integer number (42140250).

Almost surely, 2^331140431 is an apocalyptic number.

331140431 is a deficient number, since it is larger than the sum of its proper divisors (5981569).

331140431 is a wasteful number, since it uses less digits than its factorization.

331140431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25209.

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

The square root of 331140431 is about 18197.2643823186. The cubic root of 331140431 is about 691.8374543044.

Adding to 331140431 its reverse (134041133), we get a palindrome (465181564).

The spelling of 331140431 in words is "three hundred thirty-one million, one hundred forty thousand, four hundred thirty-one".