1203105023 has 4 divisors (see below), whose sum is σ = 1266426360. Its totient is φ = 1139783688.

The previous prime is 1203104951. The next prime is 1203105047. The reversal of 1203105023 is 3205013021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1203105023 - 2¹⁰ = 1203103999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1203104992 and 1203105010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203105523) 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, 31660640 + ... + 31660677.

It is an arithmetic number, because the mean of its divisors is an integer number (316606590).

Almost surely, 2^1203105023 is an apocalyptic number.

1203105023 is a deficient number, since it is larger than the sum of its proper divisors (63321337).

1203105023 is an equidigital number, since it uses as much as digits as its factorization.

1203105023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63321336.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 1203105023 is about 34685.8043441406. The cubic root of 1203105023 is about 1063.5743295921.

Adding to 1203105023 its reverse (3205013021), we get a palindrome (4408118044).

The spelling of 1203105023 in words is "one billion, two hundred three million, one hundred five thousand, twenty-three".