2421013231331 has 4 divisors (see below), whose sum is σ = 2421021656664. Its totient is φ = 2421004806000.

The previous prime is 2421013231309. The next prime is 2421013231363. The reversal of 2421013231331 is 1331323101242.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2421013231331 - 2¹⁴ = 2421013214947 is a prime.

It is a super-2 number, since 2×2421013231331² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2421013231331.

It is not an unprimeable number, because it can be changed into a prime (2421013231381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3765845 + ... + 4361606.

It is an arithmetic number, because the mean of its divisors is an integer number (605255414166).

Almost surely, 2^{2421013231331} is an apocalyptic number.

2421013231331 is a deficient number, since it is larger than the sum of its proper divisors (8425333).

2421013231331 is an equidigital number, since it uses as much as digits as its factorization.

2421013231331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8425332.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 2421013231331 its reverse (1331323101242), we get a palindrome (3752336332573).

The spelling of 2421013231331 in words is "two trillion, four hundred twenty-one billion, thirteen million, two hundred thirty-one thousand, three hundred thirty-one".