1232514781345 has 4 divisors (see below), whose sum is σ = 1479017737620. Its totient is φ = 986011825072.

The previous prime is 1232514781343. The next prime is 1232514781349. The reversal of 1232514781345 is 5431874152321.

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 393729895441 + 838784885904 = 627479^2 + 915852^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232514781345 - 2¹ = 1232514781343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1232514781295 and 1232514781304.

It is not an unprimeable number, because it can be changed into a prime (1232514781343) 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, 123251478130 + ... + 123251478139.

It is an arithmetic number, because the mean of its divisors is an integer number (369754434405).

Almost surely, 2^{1232514781345} is an apocalyptic number.

It is an amenable number.

1232514781345 is a deficient number, since it is larger than the sum of its proper divisors (246502956275).

1232514781345 is an equidigital number, since it uses as much as digits as its factorization.

1232514781345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246502956274.

The product of its digits is 806400, while the sum is 46.

The spelling of 1232514781345 in words is "one trillion, two hundred thirty-two billion, five hundred fourteen million, seven hundred eighty-one thousand, three hundred forty-five".