1231315 has 8 divisors (see below), whose sum is σ = 1494720. Its totient is φ = 973632.

The previous prime is 1231313. The next prime is 1231319. The reversal of 1231315 is 5131321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231315 - 2¹ = 1231313 is a prime.

It is a super-2 number, since 2×1231315² = 3032273258450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939 + ... + 1828.

It is an arithmetic number, because the mean of its divisors is an integer number (186840).

2^1231315 is an apocalyptic number.

1231315 is a deficient number, since it is larger than the sum of its proper divisors (263405).

1231315 is an equidigital number, since it uses as much as digits as its factorization.

1231315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861.

The product of its digits is 90, while the sum is 16.

The square root of 1231315 is about 1109.6463400561. The cubic root of 1231315 is about 107.1822961686.

Adding to 1231315 its reverse (5131321), we get a palindrome (6362636).

The spelling of 1231315 in words is "one million, two hundred thirty-one thousand, three hundred fifteen".