21302423241 has 32 divisors (see below), whose sum is σ = 31530166272. Its totient is φ = 12684908160.

The previous prime is 21302423231. The next prime is 21302423269. The reversal of 21302423241 is 14232420312.

It is a happy number.

It is not a de Polignac number, because 21302423241 - 2¹⁹ = 21301898953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21302423231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 616756 + ... + 650378.

It is an arithmetic number, because the mean of its divisors is an integer number (985317696).

Almost surely, 2^21302423241 is an apocalyptic number.

It is an amenable number.

21302423241 is a deficient number, since it is larger than the sum of its proper divisors (10227743031).

21302423241 is a wasteful number, since it uses less digits than its factorization.

21302423241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33973.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21302423241 its reverse (14232420312), we get a palindrome (35534843553).

The spelling of 21302423241 in words is "twenty-one billion, three hundred two million, four hundred twenty-three thousand, two hundred forty-one".