2421531239 has 2 divisors, whose sum is σ = 2421531240. Its totient is φ = 2421531238.

The previous prime is 2421531199. The next prime is 2421531337. The reversal of 2421531239 is 9321351242.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2421531239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2421533239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210765619 + 1210765620.

It is an arithmetic number, because the mean of its divisors is an integer number (1210765620).

Almost surely, 2^2421531239 is an apocalyptic number.

2421531239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421531239 is an equidigital number, since it uses as much as digits as its factorization.

2421531239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 2421531239 is about 49209.0564733769. The cubic root of 2421531239 is about 1342.8577976333.

The spelling of 2421531239 in words is "two billion, four hundred twenty-one million, five hundred thirty-one thousand, two hundred thirty-nine".