1231050423 has 4 divisors (see below), whose sum is σ = 1641400568. Its totient is φ = 820700280.

The previous prime is 1231050419. The next prime is 1231050433. The reversal of 1231050423 is 3240501321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3240501321 = 3 ⋅1080167107.

It is not a de Polignac number, because 1231050423 - 2² = 1231050419 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 1231050423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231050433) 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, 205175068 + ... + 205175073.

It is an arithmetic number, because the mean of its divisors is an integer number (410350142).

Almost surely, 2^1231050423 is an apocalyptic number.

1231050423 is a deficient number, since it is larger than the sum of its proper divisors (410350145).

1231050423 is an equidigital number, since it uses as much as digits as its factorization.

1231050423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410350144.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1231050423 is about 35086.3281492948. The cubic root of 1231050423 is about 1071.7461873929.

Adding to 1231050423 its reverse (3240501321), we get a palindrome (4471551744).

The spelling of 1231050423 in words is "one billion, two hundred thirty-one million, fifty thousand, four hundred twenty-three".