23001351540 has 24 divisors (see below), whose sum is σ = 64403784480. Its totient is φ = 6133693728.

The previous prime is 23001351523. The next prime is 23001351553. The reversal of 23001351540 is 4515310032.

It is a super-3 number, since 3×23001351540³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23001351540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191677870 + ... + 191677989.

It is an arithmetic number, because the mean of its divisors is an integer number (2683491020).

Almost surely, 2^23001351540 is an apocalyptic number.

23001351540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23001351540 is an abundant number, since it is smaller than the sum of its proper divisors (41402432940).

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

23001351540 is a wasteful number, since it uses less digits than its factorization.

23001351540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383355871 (or 383355869 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 23001351540 its reverse (4515310032), we get a palindrome (27516661572).

The spelling of 23001351540 in words is "twenty-three billion, one million, three hundred fifty-one thousand, five hundred forty".