1231013033 has 4 divisors (see below), whose sum is σ = 1254239748. Its totient is φ = 1207786320.

The previous prime is 1231013011. The next prime is 1231013093. The reversal of 1231013033 is 3303101321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1108423849 + 122589184 = 33293^2 + 11072^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231013033 - 2⁸ = 1231012777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231013093) 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, 11613278 + ... + 11613383.

It is an arithmetic number, because the mean of its divisors is an integer number (313559937).

Almost surely, 2^1231013033 is an apocalyptic number.

It is an amenable number.

1231013033 is a deficient number, since it is larger than the sum of its proper divisors (23226715).

1231013033 is an equidigital number, since it uses as much as digits as its factorization.

1231013033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23226714.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1231013033 is about 35085.7953166235. The cubic root of 1231013033 is about 1071.7353367690.

Adding to 1231013033 its reverse (3303101321), we get a palindrome (4534114354).

The spelling of 1231013033 in words is "one billion, two hundred thirty-one million, thirteen thousand, thirty-three".