23420231051540 has 48 divisors (see below), whose sum is σ = 49672513228800. Its totient is φ = 9274888167552.

The previous prime is 23420231051521. The next prime is 23420231051551. The reversal of 23420231051540 is 4515013202432.

It is a junction number, because it is equal to n+sod(n) for n = 23420231051497 and 23420231051506.

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, 1411634 + ... + 6988073.

It is an arithmetic number, because the mean of its divisors is an integer number (1034844025600).

Almost surely, 2^{23420231051540} is an apocalyptic number.

23420231051540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23420231051540 is an abundant number, since it is smaller than the sum of its proper divisors (26252282177260).

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

23420231051540 is a wasteful number, since it uses less digits than its factorization.

23420231051540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8401104 (or 8401102 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 23420231051540 its reverse (4515013202432), we get a palindrome (27935244253972).

The spelling of 23420231051540 in words is "twenty-three trillion, four hundred twenty billion, two hundred thirty-one million, fifty-one thousand, five hundred forty".