331142331 has 8 divisors (see below), whose sum is σ = 475486480. Its totient is φ = 203779872.

The previous prime is 331142323. The next prime is 331142333. The reversal of 331142331 is 133241133.

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

It is not a de Polignac number, because 331142331 - 2³ = 331142323 is a prime.

It is a super-2 number, since 2×331142331² = 219310486760227122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331142298 and 331142307.

It is not an unprimeable number, because it can be changed into a prime (331142333) 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, 4245376 + ... + 4245453.

It is an arithmetic number, because the mean of its divisors is an integer number (59435810).

Almost surely, 2^331142331 is an apocalyptic number.

331142331 is a deficient number, since it is larger than the sum of its proper divisors (144344149).

331142331 is a wasteful number, since it uses less digits than its factorization.

331142331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8490845.

The product of its digits is 648, while the sum is 21.

The square root of 331142331 is about 18197.3165878928. The cubic root of 331142331 is about 691.8387774980.

Adding to 331142331 its reverse (133241133), we get a palindrome (464383464).

The spelling of 331142331 in words is "three hundred thirty-one million, one hundred forty-two thousand, three hundred thirty-one".