123100322131 has 4 divisors (see below), whose sum is σ = 123131833672. Its totient is φ = 123068810592.

The previous prime is 123100322119. The next prime is 123100322173. The reversal of 123100322131 is 131223001321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131223001321 = 311 ⋅421938911.

It is a cyclic number.

It is not a de Polignac number, because 123100322131 - 2⁷ = 123100322003 is a prime.

It is a super-2 number, since 2×123100322131² (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 = 123100322099 and 123100322108.

It is not an unprimeable number, because it can be changed into a prime (123100320131) 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, 15749910 + ... + 15757723.

It is an arithmetic number, because the mean of its divisors is an integer number (30782958418).

Almost surely, 2^123100322131 is an apocalyptic number.

123100322131 is a deficient number, since it is larger than the sum of its proper divisors (31511541).

123100322131 is an equidigital number, since it uses as much as digits as its factorization.

123100322131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31511540.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123100322131 its reverse (131223001321), we get a palindrome (254323323452).

The spelling of 123100322131 in words is "one hundred twenty-three billion, one hundred million, three hundred twenty-two thousand, one hundred thirty-one".