22431234340 has 24 divisors (see below), whose sum is σ = 47109948480. Its totient is φ = 8971663968.

The previous prime is 22431234337. The next prime is 22431234347. The reversal of 22431234340 is 4343213422.

It is a junction number, because it is equal to n+sod(n) for n = 22431234299 and 22431234308.

It is not an unprimeable number, because it can be changed into a prime (22431234347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199531 + ... + 290989.

It is an arithmetic number, because the mean of its divisors is an integer number (1962914520).

Almost surely, 2^22431234340 is an apocalyptic number.

22431234340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22431234340 is an abundant number, since it is smaller than the sum of its proper divisors (24678714140).

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

22431234340 is a wasteful number, since it uses less digits than its factorization.

22431234340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103731 (or 103729 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 22431234340 its reverse (4343213422), we get a palindrome (26774447762).

The spelling of 22431234340 in words is "twenty-two billion, four hundred thirty-one million, two hundred thirty-four thousand, three hundred forty".