23203140140 has 24 divisors (see below), whose sum is σ = 50845142880. Its totient is φ = 8877723008.

The previous prime is 23203140137. The next prime is 23203140143. The reversal of 23203140140 is 4104130232.

It is an interprime number because it is at equal distance from previous prime (23203140137) and next prime (23203140143).

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

It is not an unprimeable number, because it can be changed into a prime (23203140143) 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, 25220345 + ... + 25221264.

It is an arithmetic number, because the mean of its divisors is an integer number (2118547620).

Almost surely, 2^23203140140 is an apocalyptic number.

23203140140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23203140140 is an abundant number, since it is smaller than the sum of its proper divisors (27642002740).

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

23203140140 is a wasteful number, since it uses less digits than its factorization.

23203140140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50441641 (or 50441639 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 23203140140 its reverse (4104130232), we get a palindrome (27307270372).

The spelling of 23203140140 in words is "twenty-three billion, two hundred three million, one hundred forty thousand, one hundred forty".