331231220142 has 16 divisors (see below), whose sum is σ = 663269347152. Its totient is φ = 110275922240.

The previous prime is 331231220101. The next prime is 331231220171. The reversal of 331231220142 is 241022132133.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33615783 + ... + 33625634.

It is an arithmetic number, because the mean of its divisors is an integer number (41454334197).

Almost surely, 2^331231220142 is an apocalyptic number.

331231220142 is an abundant number, since it is smaller than the sum of its proper divisors (332038127010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331231220142 is a wasteful number, since it uses less digits than its factorization.

331231220142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67242243.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 331231220142 its reverse (241022132133), we get a palindrome (572253352275).

The spelling of 331231220142 in words is "three hundred thirty-one billion, two hundred thirty-one million, two hundred twenty thousand, one hundred forty-two".