331415421 has 4 divisors (see below), whose sum is σ = 441887232. Its totient is φ = 220943612.

The previous prime is 331415419. The next prime is 331415437. The reversal of 331415421 is 124514133.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 331415421 - 2¹ = 331415419 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 331415391 and 331415400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331415411) 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 3 ways as a sum of consecutive naturals, for example, 55235901 + ... + 55235906.

It is an arithmetic number, because the mean of its divisors is an integer number (110471808).

Almost surely, 2^331415421 is an apocalyptic number.

It is an amenable number.

331415421 is a deficient number, since it is larger than the sum of its proper divisors (110471811).

331415421 is a wasteful number, since it uses less digits than its factorization.

331415421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110471810.

The product of its digits is 1440, while the sum is 24.

The square root of 331415421 is about 18204.8186203543. The cubic root of 331415421 is about 692.0289095755.

Adding to 331415421 its reverse (124514133), we get a palindrome (455929554).

The spelling of 331415421 in words is "three hundred thirty-one million, four hundred fifteen thousand, four hundred twenty-one".