23111543240 has 32 divisors (see below), whose sum is σ = 52028412480. Its totient is φ = 9239739072.

The previous prime is 23111543227. The next prime is 23111543249. The reversal of 23111543240 is 4234511132.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23111543249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75212 + ... + 227771.

It is an arithmetic number, because the mean of its divisors is an integer number (1625887890).

Almost surely, 2^23111543240 is an apocalyptic number.

23111543240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23111543240 is an abundant number, since it is smaller than the sum of its proper divisors (28916869240).

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

23111543240 is a wasteful number, since it uses less digits than its factorization.

23111543240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304901 (or 304897 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 23111543240 in words is "twenty-three billion, one hundred eleven million, five hundred forty-three thousand, two hundred forty".