2631403 has 4 divisors (see below), whose sum is σ = 2702560. Its totient is φ = 2560248.

The previous prime is 2631401. The next prime is 2631427. The reversal of 2631403 is 3041362.

2631403 is nontrivially palindromic in base 6.

2631403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3041362 = 2 ⋅1520681.

It is a cyclic number.

It is not a de Polignac number, because 2631403 - 2¹ = 2631401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2631401) 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, 35523 + ... + 35596.

It is an arithmetic number, because the mean of its divisors is an integer number (675640).

2^2631403 is an apocalyptic number.

2631403 is a deficient number, since it is larger than the sum of its proper divisors (71157).

2631403 is an equidigital number, since it uses as much as digits as its factorization.

2631403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71156.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2631403 is about 1622.1599797800. The cubic root of 2631403 is about 138.0582789623.

Adding to 2631403 its reverse (3041362), we get a palindrome (5672765).

The spelling of 2631403 in words is "two million, six hundred thirty-one thousand, four hundred three".