1230232133 has 4 divisors (see below), whose sum is σ = 1324865388. Its totient is φ = 1135598880.

The previous prime is 1230232127. The next prime is 1230232139. The reversal of 1230232133 is 3312320321.

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

It is an interprime number because it is at equal distance from previous prime (1230232127) and next prime (1230232139).

It can be written as a sum of positive squares in 2 ways, for example, as 576816289 + 653415844 = 24017^2 + 25562^2 .

It is not a de Polignac number, because 1230232133 - 2¹⁸ = 1229969989 is a prime.

It is a super-4 number, since 4×1230232133⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230232139) 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, 47316608 + ... + 47316633.

It is an arithmetic number, because the mean of its divisors is an integer number (331216347).

Almost surely, 2^1230232133 is an apocalyptic number.

1230232133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1230232133 is a deficient number, since it is larger than the sum of its proper divisors (94633255).

1230232133 is an equidigital number, since it uses as much as digits as its factorization.

1230232133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94633254.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1230232133 is about 35074.6651160065. The cubic root of 1230232133 is about 1071.5086683985.

Adding to 1230232133 its reverse (3312320321), we get a palindrome (4542552454).

The spelling of 1230232133 in words is "one billion, two hundred thirty million, two hundred thirty-two thousand, one hundred thirty-three".