2261321031 has 8 divisors (see below), whose sum is σ = 3020670064. Its totient is φ = 1504759680.

The previous prime is 2261321021. The next prime is 2261321033. The reversal of 2261321031 is 1301231622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2261321031 - 2¹⁸ = 2261058887 is a prime.

It is a super-2 number, since 2×2261321031² = 10227145610485805922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2261320989 and 2261321007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261321033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 695026 + ... + 698271.

It is an arithmetic number, because the mean of its divisors is an integer number (377583758).

Almost surely, 2^2261321031 is an apocalyptic number.

2261321031 is a deficient number, since it is larger than the sum of its proper divisors (759349033).

2261321031 is a wasteful number, since it uses less digits than its factorization.

2261321031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393841.

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

The square root of 2261321031 is about 47553.3493142176. The cubic root of 2261321031 is about 1312.5647616843.

Adding to 2261321031 its reverse (1301231622), we get a palindrome (3562552653).

The spelling of 2261321031 in words is "two billion, two hundred sixty-one million, three hundred twenty-one thousand, thirty-one".