1203040023 has 4 divisors (see below), whose sum is σ = 1604053368. Its totient is φ = 802026680.

The previous prime is 1203040021. The next prime is 1203040039. The reversal of 1203040023 is 3200403021.

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 1203040023 - 2¹ = 1203040021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1203039984 and 1203040011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203040021) 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 3 ways as a sum of consecutive naturals, for example, 200506668 + ... + 200506673.

It is an arithmetic number, because the mean of its divisors is an integer number (401013342).

Almost surely, 2^1203040023 is an apocalyptic number.

1203040023 is a deficient number, since it is larger than the sum of its proper divisors (401013345).

1203040023 is an equidigital number, since it uses as much as digits as its factorization.

1203040023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401013344.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1203040023 is about 34684.8673487445. The cubic root of 1203040023 is about 1063.5551753828. Note that the first 3 decimals are identical.

Adding to 1203040023 its reverse (3200403021), we get a palindrome (4403443044).

The spelling of 1203040023 in words is "one billion, two hundred three million, forty thousand, twenty-three".