331522142 has 48 divisors (see below), whose sum is σ = 603041760. Its totient is φ = 136124352.

The previous prime is 331522133. The next prime is 331522181. The reversal of 331522142 is 241225133.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 445823 + ... + 446565.

It is an arithmetic number, because the mean of its divisors is an integer number (12563370).

Almost surely, 2^331522142 is an apocalyptic number.

331522142 is a deficient number, since it is larger than the sum of its proper divisors (271519618).

331522142 is a wasteful number, since it uses less digits than its factorization.

331522142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945 (or 938 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 331522142 is about 18207.7495039887. The cubic root of 331522142 is about 692.1031830167.

Adding to 331522142 its reverse (241225133), we get a palindrome (572747275).

The spelling of 331522142 in words is "three hundred thirty-one million, five hundred twenty-two thousand, one hundred forty-two".