23112012140 has 24 divisors (see below), whose sum is σ = 55468829472. Its totient is φ = 7924118400.

The previous prime is 23112012071. The next prime is 23112012151. The reversal of 23112012140 is 4121021132.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82542761 + ... + 82543040.

It is an arithmetic number, because the mean of its divisors is an integer number (2311201228).

Almost surely, 2^23112012140 is an apocalyptic number.

23112012140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23112012140 is an abundant number, since it is smaller than the sum of its proper divisors (32356817332).

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

23112012140 is a wasteful number, since it uses less digits than its factorization.

23112012140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165085817 (or 165085815 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 23112012140 its reverse (4121021132), we get a palindrome (27233033272).

The spelling of 23112012140 in words is "twenty-three billion, one hundred twelve million, twelve thousand, one hundred forty".