21303142413 has 16 divisors (see below), whose sum is σ = 32513396736. Its totient is φ = 12153924720.

The previous prime is 21303142411. The next prime is 21303142417. The reversal of 21303142413 is 31424130312.

It is a happy number.

It is not a de Polignac number, because 21303142413 - 2¹ = 21303142411 is a prime.

It is a super-4 number, since 4×21303142413⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303142411) 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, 790581 + ... + 817082.

It is an arithmetic number, because the mean of its divisors is an integer number (2032087296).

Almost surely, 2^21303142413 is an apocalyptic number.

It is an amenable number.

21303142413 is a deficient number, since it is larger than the sum of its proper divisors (11210254323).

21303142413 is a wasteful number, since it uses less digits than its factorization.

21303142413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608304.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21303142413 its reverse (31424130312), we get a palindrome (52727272725).

The spelling of 21303142413 in words is "twenty-one billion, three hundred three million, one hundred forty-two thousand, four hundred thirteen".