331241421 has 48 divisors (see below), whose sum is σ = 544190400. Its totient is φ = 178198272.

The previous prime is 331241387. The next prime is 331241429. The reversal of 331241421 is 124142133.

It is not a de Polignac number, because 331241421 - 2¹⁰ = 331240397 is a prime.

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

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 650515 + ... + 651023.

It is an arithmetic number, because the mean of its divisors is an integer number (11337300).

Almost surely, 2^331241421 is an apocalyptic number.

It is an amenable number.

331241421 is a deficient number, since it is larger than the sum of its proper divisors (212948979).

331241421 is a wasteful number, since it uses less digits than its factorization.

331241421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778 (or 771 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 331241421 is about 18200.0390384197. The cubic root of 331241421 is about 691.9077785097.

Adding to 331241421 its reverse (124142133), we get a palindrome (455383554).

The spelling of 331241421 in words is "three hundred thirty-one million, two hundred forty-one thousand, four hundred twenty-one".