2531213 has 4 divisors (see below), whose sum is σ = 2548128. Its totient is φ = 2514300.

The previous prime is 2531209. The next prime is 2531233. The reversal of 2531213 is 3121352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2531213 - 2² = 2531209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2531191 and 2531200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531203) 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 3 ways as a sum of consecutive naturals, for example, 8231 + ... + 8532.

It is an arithmetic number, because the mean of its divisors is an integer number (637032).

2^2531213 is an apocalyptic number.

It is an amenable number.

2531213 is a deficient number, since it is larger than the sum of its proper divisors (16915).

2531213 is a wasteful number, since it uses less digits than its factorization.

2531213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16914.

The product of its digits is 180, while the sum is 17.

The square root of 2531213 is about 1590.9786296491. The cubic root of 2531213 is about 136.2833804250.

Adding to 2531213 its reverse (3121352), we get a palindrome (5652565).

It can be divided in two parts, 2531 and 213, that added together give a cube (2744 = 14³).

The spelling of 2531213 in words is "two million, five hundred thirty-one thousand, two hundred thirteen".