331241420 has 48 divisors (see below), whose sum is σ = 709466688. Its totient is φ = 129884160.

The previous prime is 331241387. The next prime is 331241429. The reversal of 331241420 is 24142133.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 331241392 and 331241401.

It is not an unprimeable number, because it can be changed into a prime (331241429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218465 + ... + 219975.

It is an arithmetic number, because the mean of its divisors is an integer number (14780556).

Almost surely, 2^331241420 is an apocalyptic number.

It is an amenable number.

331241420 is an abundant number, since it is smaller than the sum of its proper divisors (378225268).

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

331241420 is a wasteful number, since it uses less digits than its factorization.

331241420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730 (or 1728 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 331241420 is about 18200.0390109472. The cubic root of 331241420 is about 691.9077778134.

Adding to 331241420 its reverse (24142133), we get a palindrome (355383553).

The spelling of 331241420 in words is "three hundred thirty-one million, two hundred forty-one thousand, four hundred twenty".