12631015 has 16 divisors (see below), whose sum is σ = 15759360. Its totient is φ = 9711520.

The previous prime is 12631001. The next prime is 12631019. The reversal of 12631015 is 51013621.

It is not a de Polignac number, because 12631015 - 2¹⁵ = 12598247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12630983 and 12631001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12631019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13410 + ... + 14320.

It is an arithmetic number, because the mean of its divisors is an integer number (984960).

Almost surely, 2^12631015 is an apocalyptic number.

12631015 is a deficient number, since it is larger than the sum of its proper divisors (3128345).

12631015 is an equidigital number, since it uses as much as digits as its factorization.

12631015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 12631015 is about 3554.0139279412. The cubic root of 12631015 is about 232.8874489410.

Adding to 12631015 its reverse (51013621), we get a palindrome (63644636).

It can be divided in two parts, 1263 and 1015, that added together give a triangular number (2278 = T₆₇).

The spelling of 12631015 in words is "twelve million, six hundred thirty-one thousand, fifteen".