12312765 has 12 divisors (see below), whose sum is σ = 21342204. Its totient is φ = 6566784.

The previous prime is 12312763. The next prime is 12312767. The reversal of 12312765 is 56721321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12312763) and next prime (12312767).

It can be written as a sum of positive squares in 2 ways, for example, as 3059001 + 9253764 = 1749^2 + 3042^2 .

It is not a de Polignac number, because 12312765 - 2¹ = 12312763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136764 + ... + 136853.

It is an arithmetic number, because the mean of its divisors is an integer number (1778517).

Almost surely, 2^12312765 is an apocalyptic number.

12312765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12312765 is a deficient number, since it is larger than the sum of its proper divisors (9029439).

12312765 is a wasteful number, since it uses less digits than its factorization.

12312765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273628 (or 273625 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 12312765 is about 3508.9549726379. The cubic root of 12312765 is about 230.9148502717.

The spelling of 12312765 in words is "twelve million, three hundred twelve thousand, seven hundred sixty-five".