1231203023 has 4 divisors (see below), whose sum is σ = 1257398880. Its totient is φ = 1205007168.

The previous prime is 1231203013. The next prime is 1231203067. The reversal of 1231203023 is 3203021321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3203021321 = 7193 ⋅445297.

It is a cyclic number.

It is not a de Polignac number, because 1231203023 - 2⁴ = 1231203007 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1231202992 and 1231203010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231203013) 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, 13097858 + ... + 13097951.

It is an arithmetic number, because the mean of its divisors is an integer number (314349720).

Almost surely, 2^1231203023 is an apocalyptic number.

1231203023 is a deficient number, since it is larger than the sum of its proper divisors (26195857).

1231203023 is an equidigital number, since it uses as much as digits as its factorization.

1231203023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26195856.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1231203023 is about 35088.5027181269. The cubic root of 1231203023 is about 1071.7904698225.

Adding to 1231203023 its reverse (3203021321), we get a palindrome (4434224344).

The spelling of 1231203023 in words is "one billion, two hundred thirty-one million, two hundred three thousand, twenty-three".