21241431339 has 16 divisors (see below), whose sum is σ = 29701824000. Its totient is φ = 13477185216.

The previous prime is 21241431287. The next prime is 21241431359. The reversal of 21241431339 is 93313414212.

It is not a de Polignac number, because 21241431339 - 2²¹ = 21239334187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21241431359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 759754 + ... + 787215.

It is an arithmetic number, because the mean of its divisors is an integer number (1856364000).

Almost surely, 2^21241431339 is an apocalyptic number.

21241431339 is a deficient number, since it is larger than the sum of its proper divisors (8460392661).

21241431339 is a wasteful number, since it uses less digits than its factorization.

21241431339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547194.

The product of its digits is 15552, while the sum is 33.

The spelling of 21241431339 in words is "twenty-one billion, two hundred forty-one million, four hundred thirty-one thousand, three hundred thirty-nine".