331231142 has 64 divisors (see below), whose sum is σ = 602173440. Its totient is φ = 134877600.

The previous prime is 331231139. The next prime is 331231157. The reversal of 331231142 is 241132133.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1259303 + ... + 1259565.

It is an arithmetic number, because the mean of its divisors is an integer number (9408960).

Almost surely, 2^331231142 is an apocalyptic number.

331231142 is a deficient number, since it is larger than the sum of its proper divisors (270942298).

331231142 is a wasteful number, since it uses less digits than its factorization.

331231142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449.

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

The square root of 331231142 is about 18199.7566467247. The cubic root of 331231142 is about 691.9006213999.

Adding to 331231142 its reverse (241132133), we get a palindrome (572363275).

Subtracting from 331231142 its reverse (241132133), we obtain a palindrome (90099009).

The spelling of 331231142 in words is "three hundred thirty-one million, two hundred thirty-one thousand, one hundred forty-two".