331002342033421 has 4 divisors (see below), whose sum is σ = 331160944020192. Its totient is φ = 330843740046652.

The previous prime is 331002342033397. The next prime is 331002342033437. The reversal of 331002342033421 is 124330243200133.

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 331002342033421 - 2¹¹ = 331002342031373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331002342033821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79300990255 + ... + 79300994428.

It is an arithmetic number, because the mean of its divisors is an integer number (82790236005048).

Almost surely, 2^{331002342033421} is an apocalyptic number.

It is an amenable number.

331002342033421 is a deficient number, since it is larger than the sum of its proper divisors (158601986771).

331002342033421 is a wasteful number, since it uses less digits than its factorization.

331002342033421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158601986770.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 331002342033421 its reverse (124330243200133), we get a palindrome (455332585233554).

The spelling of 331002342033421 in words is "three hundred thirty-one trillion, two billion, three hundred forty-two million, thirty-three thousand, four hundred twenty-one".