2631221403 has 16 divisors (see below), whose sum is σ = 3694924800. Its totient is φ = 1660932000.

The previous prime is 2631221401. The next prime is 2631221431. The reversal of 2631221403 is 3041221362.

It is not a de Polignac number, because 2631221403 - 2¹ = 2631221401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2631221401) 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, 104278 + ... + 127028.

It is an arithmetic number, because the mean of its divisors is an integer number (230932800).

Almost surely, 2^2631221403 is an apocalyptic number.

2631221403 is a deficient number, since it is larger than the sum of its proper divisors (1063703397).

2631221403 is a wasteful number, since it uses less digits than its factorization.

2631221403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24802.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 2631221403 is about 51295.4325744505. The cubic root of 2631221403 is about 1380.5510302084.

Adding to 2631221403 its reverse (3041221362), we get a palindrome (5672442765).

The spelling of 2631221403 in words is "two billion, six hundred thirty-one million, two hundred twenty-one thousand, four hundred three".