331122140 has 12 divisors (see below), whose sum is σ = 695356536. Its totient is φ = 132448848.

The previous prime is 331122083. The next prime is 331122149. The reversal of 331122140 is 41221133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331122149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8278034 + ... + 8278073.

It is an arithmetic number, because the mean of its divisors is an integer number (57946378).

Almost surely, 2^331122140 is an apocalyptic number.

It is an amenable number.

331122140 is an abundant number, since it is smaller than the sum of its proper divisors (364234396).

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

331122140 is a wasteful number, since it uses less digits than its factorization.

331122140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16556116 (or 16556114 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 331122140 is about 18196.7617998368. The cubic root of 331122140 is about 691.8247158701.

Adding to 331122140 its reverse (41221133), we get a palindrome (372343273).

The spelling of 331122140 in words is "three hundred thirty-one million, one hundred twenty-two thousand, one hundred forty".