1231433122 has 4 divisors (see below), whose sum is σ = 1847149686. Its totient is φ = 615716560.

The previous prime is 1231433051. The next prime is 1231433123. The reversal of 1231433122 is 2213341321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2213341321 = 53 ⋅41761157.

It can be written as a sum of positive squares in only one way, i.e., 1222970841 + 8462281 = 34971^2 + 2909^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1231433093 and 1231433102.

It is not an unprimeable number, because it can be changed into a prime (1231433123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307858279 + ... + 307858282.

Almost surely, 2^1231433122 is an apocalyptic number.

1231433122 is a deficient number, since it is larger than the sum of its proper divisors (615716564).

1231433122 is an equidigital number, since it uses as much as digits as its factorization.

1231433122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615716563.

The product of its digits is 864, while the sum is 22.

The square root of 1231433122 is about 35091.7814024880. The cubic root of 1231433122 is about 1071.8572344824.

Adding to 1231433122 its reverse (2213341321), we get a palindrome (3444774443).

The spelling of 1231433122 in words is "one billion, two hundred thirty-one million, four hundred thirty-three thousand, one hundred twenty-two".