1232145013 has 4 divisors (see below), whose sum is σ = 1344158208. Its totient is φ = 1120131820.

The previous prime is 1232144999. The next prime is 1232145037. The reversal of 1232145013 is 3105412321.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1232145013 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232145053) 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, 56006581 + ... + 56006602.

It is an arithmetic number, because the mean of its divisors is an integer number (336039552).

Almost surely, 2^1232145013 is an apocalyptic number.

It is an amenable number.

1232145013 is a deficient number, since it is larger than the sum of its proper divisors (112013195).

1232145013 is a wasteful number, since it uses less digits than its factorization.

1232145013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112013194.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1232145013 is about 35101.9232094197. The cubic root of 1232145013 is about 1072.0637414412.

Adding to 1232145013 its reverse (3105412321), we get a palindrome (4337557334).

The spelling of 1232145013 in words is "one billion, two hundred thirty-two million, one hundred forty-five thousand, thirteen".