2131263 has 6 divisors (see below), whose sum is σ = 3078504. Its totient is φ = 1420836.

The previous prime is 2131253. The next prime is 2131267. The reversal of 2131263 is 3621312.

It is not a de Polignac number, because 2131263 - 2⁴ = 2131247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131267) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118395 + ... + 118412.

It is an arithmetic number, because the mean of its divisors is an integer number (513084).

2^2131263 is an apocalyptic number.

2131263 is a deficient number, since it is larger than the sum of its proper divisors (947241).

2131263 is a wasteful number, since it uses less digits than its factorization.

2131263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236813 (or 236810 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 2131263 is about 1459.8845844792. The cubic root of 2131263 is about 128.6902610344.

Adding to 2131263 its reverse (3621312), we get a palindrome (5752575).

The spelling of 2131263 in words is "two million, one hundred thirty-one thousand, two hundred sixty-three".