331233420 has 48 divisors (see below), whose sum is σ = 1059948288. Its totient is φ = 75710400.

The previous prime is 331233391. The next prime is 331233431. The reversal of 331233420 is 24332133.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 393906 + ... + 394745.

It is an arithmetic number, because the mean of its divisors is an integer number (22082256).

Almost surely, 2^331233420 is an apocalyptic number.

331233420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

331233420 is an abundant number, since it is smaller than the sum of its proper divisors (728714868).

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

331233420 is a wasteful number, since it uses less digits than its factorization.

331233420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788670 (or 788668 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 331233420 is about 18199.8192298715. The cubic root of 331233420 is about 691.9022075491.

Adding to 331233420 its reverse (24332133), we get a palindrome (355565553).

The spelling of 331233420 in words is "three hundred thirty-one million, two hundred thirty-three thousand, four hundred twenty".