131422123 has 4 divisors (see below), whose sum is σ = 150196720. Its totient is φ = 112647528.

The previous prime is 131422103. The next prime is 131422133. The reversal of 131422123 is 321224131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321224131 = 2543 ⋅126317.

It is a de Polignac number, because none of the positive numbers 2^k-131422123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131422123.

It is not an unprimeable number, because it can be changed into a prime (131422103) 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, 9387288 + ... + 9387301.

It is an arithmetic number, because the mean of its divisors is an integer number (37549180).

Almost surely, 2^131422123 is an apocalyptic number.

131422123 is a deficient number, since it is larger than the sum of its proper divisors (18774597).

131422123 is an equidigital number, since it uses as much as digits as its factorization.

131422123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18774596.

The product of its digits is 288, while the sum is 19.

The square root of 131422123 is about 11463.9488397323. The cubic root of 131422123 is about 508.4202339892.

Adding to 131422123 its reverse (321224131), we get a palindrome (452646254).

The spelling of 131422123 in words is "one hundred thirty-one million, four hundred twenty-two thousand, one hundred twenty-three".