23012421140 has 48 divisors (see below), whose sum is σ = 51206574720. Its totient is φ = 8662723200.

The previous prime is 23012421137. The next prime is 23012421151. The reversal of 23012421140 is 4112421032.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143147 + ... + 257906.

It is an arithmetic number, because the mean of its divisors is an integer number (1066803640).

Almost surely, 2^23012421140 is an apocalyptic number.

23012421140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23012421140 is an abundant number, since it is smaller than the sum of its proper divisors (28194153580).

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

23012421140 is a wasteful number, since it uses less digits than its factorization.

23012421140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401232 (or 401230 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 23012421140 its reverse (4112421032), we get a palindrome (27124842172).

The spelling of 23012421140 in words is "twenty-three billion, twelve million, four hundred twenty-one thousand, one hundred forty".