331140456 has 24 divisors (see below), whose sum is σ = 896838930. Its totient is φ = 110380128.

The previous prime is 331140437. The next prime is 331140457. The reversal of 331140456 is 654041133.

It can be written as a sum of positive squares in only one way, i.e., 178222500 + 152917956 = 13350^2 + 12366^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (331140457) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2299515 + ... + 2299658.

Almost surely, 2^331140456 is an apocalyptic number.

331140456 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

331140456 is an abundant number, since it is smaller than the sum of its proper divisors (565698474).

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

331140456 is a wasteful number, since it uses less digits than its factorization.

331140456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4599185 (or 4599178 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 331140456 is about 18197.2650692350. The cubic root of 331140456 is about 691.8374717149.

Adding to 331140456 its reverse (654041133), we get a palindrome (985181589).

The spelling of 331140456 in words is "three hundred thirty-one million, one hundred forty thousand, four hundred fifty-six".