21431303022 has 32 divisors (see below), whose sum is σ = 44031405600. Its totient is φ = 6949058688.

The previous prime is 21431302969. The next prime is 21431303119. The reversal of 21431303022 is 22030313412.

It is a self number, because there is not a number n which added to its sum of digits gives 21431303022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1250004 + ... + 1267032.

It is an arithmetic number, because the mean of its divisors is an integer number (1375981425).

Almost surely, 2^21431303022 is an apocalyptic number.

21431303022 is an abundant number, since it is smaller than the sum of its proper divisors (22600102578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21431303022 is a wasteful number, since it uses less digits than its factorization.

21431303022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22740.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21431303022 its reverse (22030313412), we get a palindrome (43461616434).

The spelling of 21431303022 in words is "twenty-one billion, four hundred thirty-one million, three hundred three thousand, twenty-two".