331400142 has 24 divisors (see below), whose sum is σ = 760271616. Its totient is φ = 103968576.

The previous prime is 331400141. The next prime is 331400161. The reversal of 331400142 is 241004133.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331400141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 541198 + ... + 541809.

It is an arithmetic number, because the mean of its divisors is an integer number (31677984).

Almost surely, 2^331400142 is an apocalyptic number.

331400142 is an abundant number, since it is smaller than the sum of its proper divisors (428871474).

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

331400142 is a wasteful number, since it uses less digits than its factorization.

331400142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083032 (or 1083029 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 331400142 is about 18204.3989738744. The cubic root of 331400142 is about 692.0182747131.

Adding to 331400142 its reverse (241004133), we get a palindrome (572404275).

The spelling of 331400142 in words is "three hundred thirty-one million, four hundred thousand, one hundred forty-two".