23115240240 has 80 divisors (see below), whose sum is σ = 71684647008. Its totient is φ = 6161707008.

The previous prime is 23115240193. The next prime is 23115240287. The reversal of 23115240240 is 4204251132.

It is an interprime number because it is at equal distance from previous prime (23115240193) and next prime (23115240287).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 23115240240.

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, 662922 + ... + 696918.

Almost surely, 2^23115240240 is an apocalyptic number.

23115240240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23115240240 is an abundant number, since it is smaller than the sum of its proper divisors (48569406768).

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

23115240240 is a wasteful number, since it uses less digits than its factorization.

23115240240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36846 (or 36840 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 23115240240 its reverse (4204251132), we get a palindrome (27319491372).

The spelling of 23115240240 in words is "twenty-three billion, one hundred fifteen million, two hundred forty thousand, two hundred forty".