12603631 has 4 divisors (see below), whose sum is σ = 13267000. Its totient is φ = 11940264.

The previous prime is 12603629. The next prime is 12603653. The reversal of 12603631 is 13630621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12603631 - 2¹ = 12603629 is a prime.

It is a super-2 number, since 2×12603631² = 317703028768322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12603611) 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 3 ways as a sum of consecutive naturals, for example, 331656 + ... + 331693.

It is an arithmetic number, because the mean of its divisors is an integer number (3316750).

Almost surely, 2^12603631 is an apocalyptic number.

12603631 is a deficient number, since it is larger than the sum of its proper divisors (663369).

12603631 is an equidigital number, since it uses as much as digits as its factorization.

12603631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663368.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 12603631 is about 3550.1592922008. The cubic root of 12603631 is about 232.7190274225.

The spelling of 12603631 in words is "twelve million, six hundred three thousand, six hundred thirty-one".