23435424340 has 24 divisors (see below), whose sum is σ = 49392072072. Its totient is φ = 9340325760.

The previous prime is 23435424289. The next prime is 23435424343. The reversal of 23435424340 is 4342453432.

It can be written as a sum of positive squares in 4 ways, for example, as 30096196 + 23405328144 = 5486^2 + 152988^2 .

It is a super-2 number, since 2×23435424340² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23435424296 and 23435424305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23435424343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2109571 + ... + 2120650.

It is an arithmetic number, because the mean of its divisors is an integer number (2058003003).

Almost surely, 2^23435424340 is an apocalyptic number.

23435424340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23435424340 is an abundant number, since it is smaller than the sum of its proper divisors (25956647732).

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

23435424340 is a wasteful number, since it uses less digits than its factorization.

23435424340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4230507 (or 4230505 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 34.

Adding to 23435424340 its reverse (4342453432), we get a palindrome (27777877772).

The spelling of 23435424340 in words is "twenty-three billion, four hundred thirty-five million, four hundred twenty-four thousand, three hundred forty".