23143312240 has 20 divisors (see below), whose sum is σ = 53808201144. Its totient is φ = 9257324864.

The previous prime is 23143312169. The next prime is 23143312259. The reversal of 23143312240 is 4221334132.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×23143312240² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144645622 + ... + 144645781.

Almost surely, 2^23143312240 is an apocalyptic number.

23143312240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23143312240 is an abundant number, since it is smaller than the sum of its proper divisors (30664888904).

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

23143312240 is a wasteful number, since it uses less digits than its factorization.

23143312240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289291416 (or 289291410 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 23143312240 its reverse (4221334132), we get a palindrome (27364646372).

The spelling of 23143312240 in words is "twenty-three billion, one hundred forty-three million, three hundred twelve thousand, two hundred forty".