123043140131 has 4 divisors (see below), whose sum is σ = 123169859064. Its totient is φ = 122916421200.

The previous prime is 123043140127. The next prime is 123043140139. The reversal of 123043140131 is 131041340321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123043140131 - 2² = 123043140127 is a prime.

It is a super-2 number, since 2×123043140131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123043140097 and 123043140106.

It is not an unprimeable number, because it can be changed into a prime (123043140139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63358010 + ... + 63359951.

It is an arithmetic number, because the mean of its divisors is an integer number (30792464766).

Almost surely, 2^123043140131 is an apocalyptic number.

123043140131 is a deficient number, since it is larger than the sum of its proper divisors (126718933).

123043140131 is an equidigital number, since it uses as much as digits as its factorization.

123043140131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126718932.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 123043140131 its reverse (131041340321), we get a palindrome (254084480452).

The spelling of 123043140131 in words is "one hundred twenty-three billion, forty-three million, one hundred forty thousand, one hundred thirty-one".