1203123113 has 4 divisors (see below), whose sum is σ = 1241933568. Its totient is φ = 1164312660.

The previous prime is 1203123083. The next prime is 1203123151. The reversal of 1203123113 is 3113213021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1203123113 - 2¹² = 1203119017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1203123091 and 1203123100.

It is not an unprimeable number, because it can be changed into a prime (1203125113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19405181 + ... + 19405242.

It is an arithmetic number, because the mean of its divisors is an integer number (310483392).

Almost surely, 2^1203123113 is an apocalyptic number.

It is an amenable number.

1203123113 is a deficient number, since it is larger than the sum of its proper divisors (38810455).

1203123113 is an equidigital number, since it uses as much as digits as its factorization.

1203123113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38810454.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1203123113 is about 34686.0651126645. The cubic root of 1203123113 is about 1063.5796602332.

Adding to 1203123113 its reverse (3113213021), we get a palindrome (4316336134).

The spelling of 1203123113 in words is "one billion, two hundred three million, one hundred twenty-three thousand, one hundred thirteen".