1312545 has 32 divisors (see below), whose sum is σ = 2322432. Its totient is φ = 628992.

The previous prime is 1312543. The next prime is 1312547. The reversal of 1312545 is 5452131.

It is an interprime number because it is at equal distance from previous prime (1312543) and next prime (1312547).

It is not a de Polignac number, because 1312545 - 2¹ = 1312543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10272 + ... + 10398.

It is an arithmetic number, because the mean of its divisors is an integer number (72576).

2^1312545 is an apocalyptic number.

1312545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1312545 is a deficient number, since it is larger than the sum of its proper divisors (1009887).

1312545 is a wasteful number, since it uses less digits than its factorization.

1312545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201.

The product of its digits is 600, while the sum is 21.

The square root of 1312545 is about 1145.6635631807. The cubic root of 1312545 is about 109.4892297741.

Adding to 1312545 its reverse (5452131), we get a palindrome (6764676).

The spelling of 1312545 in words is "one million, three hundred twelve thousand, five hundred forty-five".