23143314440 has 32 divisors (see below), whose sum is σ = 52279940160. Its totient is φ = 9220440000.

The previous prime is 23143314421. The next prime is 23143314443. The reversal of 23143314440 is 4441334132.

It is a happy number.

It is a super-2 number, since 2×23143314440² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23143314443) 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, 1142516 + ... + 1162595.

It is an arithmetic number, because the mean of its divisors is an integer number (1633748130).

Almost surely, 2^23143314440 is an apocalyptic number.

23143314440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23143314440 is an abundant number, since it is smaller than the sum of its proper divisors (29136625720).

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

23143314440 is a wasteful number, since it uses less digits than its factorization.

23143314440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305373 (or 2305369 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 23143314440 its reverse (4441334132), we get a palindrome (27584648572).

The spelling of 23143314440 in words is "twenty-three billion, one hundred forty-three million, three hundred fourteen thousand, four hundred forty".