2261287003 has 4 divisors (see below), whose sum is σ = 2261440720. Its totient is φ = 2261133288.

The previous prime is 2261287001. The next prime is 2261287043. The reversal of 2261287003 is 3007821622.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2261287003 - 2¹ = 2261287001 is a prime.

It is a super-2 number, since 2×2261287003² = 10226837819873444018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2261287001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52143 + ... + 85096.

It is an arithmetic number, because the mean of its divisors is an integer number (565360180).

Almost surely, 2^2261287003 is an apocalyptic number.

2261287003 is a deficient number, since it is larger than the sum of its proper divisors (153717).

2261287003 is a wasteful number, since it uses less digits than its factorization.

2261287003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153716.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 2261287003 is about 47552.9915252448. The cubic root of 2261287003 is about 1312.5581778958.

The spelling of 2261287003 in words is "two billion, two hundred sixty-one million, two hundred eighty-seven thousand, three".