331061040 has 80 divisors (see below), whose sum is σ = 1140328800. Its totient is φ = 88282368.

The previous prime is 331060991. The next prime is 331061053. The reversal of 331061040 is 40160133.

331061040 is a `hidden beast` number, since 3 + 3 + 10 + 610 + 40 = 666.

331061040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74475 + ... + 78794.

It is an arithmetic number, because the mean of its divisors is an integer number (14254110).

Almost surely, 2^331061040 is an apocalyptic number.

331061040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

331061040 is an abundant number, since it is smaller than the sum of its proper divisors (809267760).

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

331061040 is a wasteful number, since it uses less digits than its factorization.

331061040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153291 (or 153279 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 331061040 is about 18195.0828522433. The cubic root of 331061040 is about 691.7821604852.

The spelling of 331061040 in words is "three hundred thirty-one million, sixty-one thousand, forty".