123131422 has 4 divisors (see below), whose sum is σ = 184697136. Its totient is φ = 61565710.

The previous prime is 123131417. The next prime is 123131429. The reversal of 123131422 is 224131321.

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: 224131321 = 233 ⋅961937.

It is a super-2 number, since 2×123131422² = 30322694167484168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123131422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123131429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30782854 + ... + 30782857.

It is an arithmetic number, because the mean of its divisors is an integer number (46174284).

Almost surely, 2^123131422 is an apocalyptic number.

123131422 is a deficient number, since it is larger than the sum of its proper divisors (61565714).

123131422 is an equidigital number, since it uses as much as digits as its factorization.

123131422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61565713.

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

The square root of 123131422 is about 11096.4598859276. The cubic root of 123131422 is about 497.4960440078.

Adding to 123131422 its reverse (224131321), we get a palindrome (347262743).

The spelling of 123131422 in words is "one hundred twenty-three million, one hundred thirty-one thousand, four hundred twenty-two".