1203111423 has 12 divisors (see below), whose sum is σ = 1739637328. Its totient is φ = 801239040.

The previous prime is 1203111409. The next prime is 1203111431. The reversal of 1203111423 is 3241113021.

It is not a de Polignac number, because 1203111423 - 2⁶ = 1203111359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1203111396 and 1203111405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203111433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60418 + ... + 77823.

Almost surely, 2^1203111423 is an apocalyptic number.

1203111423 is a deficient number, since it is larger than the sum of its proper divisors (536525905).

1203111423 is a wasteful number, since it uses less digits than its factorization.

1203111423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139214 (or 139211 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1203111423 is about 34685.8966007800. The cubic root of 1203111423 is about 1063.5762155077.

Adding to 1203111423 its reverse (3241113021), we get a palindrome (4444224444).

The spelling of 1203111423 in words is "one billion, two hundred three million, one hundred eleven thousand, four hundred twenty-three".