2261305372 has 12 divisors (see below), whose sum is σ = 3959879896. Its totient is φ = 1129911120.

The previous prime is 2261305351. The next prime is 2261305381. The reversal of 2261305372 is 2735031622.

It is a super-2 number, since 2×2261305372² = 10227003970872116768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178503 + ... + 190750.

Almost surely, 2^2261305372 is an apocalyptic number.

It is an amenable number.

2261305372 is a deficient number, since it is larger than the sum of its proper divisors (1698574524).

2261305372 is a wasteful number, since it uses less digits than its factorization.

2261305372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370788 (or 370786 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 2261305372 is about 47553.1846672754. The cubic root of 2261305372 is about 1312.5617319657.

Adding to 2261305372 its reverse (2735031622), we get a palindrome (4996336994).

The spelling of 2261305372 in words is "two billion, two hundred sixty-one million, three hundred five thousand, three hundred seventy-two".