1232540733 has 4 divisors (see below), whose sum is σ = 1643387648. Its totient is φ = 821693820.

The previous prime is 1232540711. The next prime is 1232540741. The reversal of 1232540733 is 3370452321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3370452321 = 3 ⋅1123484107.

It is not a de Polignac number, because 1232540733 - 2¹³ = 1232532541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1232540733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232540753) 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, 205423453 + ... + 205423458.

It is an arithmetic number, because the mean of its divisors is an integer number (410846912).

Almost surely, 2^1232540733 is an apocalyptic number.

It is an amenable number.

1232540733 is a deficient number, since it is larger than the sum of its proper divisors (410846915).

1232540733 is an equidigital number, since it uses as much as digits as its factorization.

1232540733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410846914.

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 1232540733 is about 35107.5594851024. The cubic root of 1232540733 is about 1072.1784984033.

The spelling of 1232540733 in words is "one billion, two hundred thirty-two million, five hundred forty thousand, seven hundred thirty-three".