2631103221 has 32 divisors (see below), whose sum is σ = 3685461120. Its totient is φ = 1668680832.

The previous prime is 2631103219. The next prime is 2631103247. The reversal of 2631103221 is 1223011362.

It is not a de Polignac number, because 2631103221 - 2¹ = 2631103219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2631103121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19205065 + ... + 19205201.

It is an arithmetic number, because the mean of its divisors is an integer number (115170660).

Almost surely, 2^2631103221 is an apocalyptic number.

It is an amenable number.

2631103221 is a deficient number, since it is larger than the sum of its proper divisors (1054357899).

2631103221 is an frugal number, since it uses more digits than its factorization.

2631103221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 2631103221 is about 51294.2805876055. The cubic root of 2631103221 is about 1380.5303606283.

Adding to 2631103221 its reverse (1223011362), we get a palindrome (3854114583).

The spelling of 2631103221 in words is "two billion, six hundred thirty-one million, one hundred three thousand, two hundred twenty-one".