23031223242440 has 128 divisors (see below), whose sum is σ = 63791551365120. Its totient is φ = 7309448467200.

The previous prime is 23031223242337. The next prime is 23031223242451. The reversal of 23031223242440 is 4424232213032.

It is a junction number, because it is equal to n+sod(n) for n = 23031223242397 and 23031223242406.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57482246 + ... + 57881525.

It is an arithmetic number, because the mean of its divisors is an integer number (498371495040).

Almost surely, 2^{23031223242440} is an apocalyptic number.

23031223242440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23031223242440 is an abundant number, since it is smaller than the sum of its proper divisors (40760328122680).

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

23031223242440 is a wasteful number, since it uses less digits than its factorization.

23031223242440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115363843 (or 115363839 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 23031223242440 its reverse (4424232213032), we get a palindrome (27455455455472).

The spelling of 23031223242440 in words is "twenty-three trillion, thirty-one billion, two hundred twenty-three million, two hundred forty-two thousand, four hundred forty".