20425431324 has 48 divisors (see below), whose sum is σ = 47997508608. Its totient is φ = 6760258368.

The previous prime is 20425431289. The next prime is 20425431343. The reversal of 20425431324 is 42313452402.

It is a junction number, because it is equal to n+sod(n) for n = 20425431291 and 20425431300.

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, 1992877 + ... + 2003099.

It is an arithmetic number, because the mean of its divisors is an integer number (999948096).

Almost surely, 2^20425431324 is an apocalyptic number.

It is an amenable number.

20425431324 is an abundant number, since it is smaller than the sum of its proper divisors (27572077284).

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

20425431324 is a wasteful number, since it uses less digits than its factorization.

20425431324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11394 (or 11392 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 20425431324 its reverse (42313452402), we get a palindrome (62738883726).

The spelling of 20425431324 in words is "twenty billion, four hundred twenty-five million, four hundred thirty-one thousand, three hundred twenty-four".