2513731 has 4 divisors (see below), whose sum is σ = 2742264. Its totient is φ = 2285200.

The previous prime is 2513729. The next prime is 2513747. The reversal of 2513731 is 1373152.

2513731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2513731 - 2¹ = 2513729 is a prime.

It is a super-2 number, since 2×2513731² = 12637687080722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2513761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114250 + ... + 114271.

It is an arithmetic number, because the mean of its divisors is an integer number (685566).

2^2513731 is an apocalyptic number.

2513731 is a deficient number, since it is larger than the sum of its proper divisors (228533).

2513731 is a wasteful number, since it uses less digits than its factorization.

2513731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228532.

The product of its digits is 630, while the sum is 22.

The square root of 2513731 is about 1585.4750076870. The cubic root of 2513731 is about 135.9689050883.

Adding to 2513731 its reverse (1373152), we get a palindrome (3886883).

The spelling of 2513731 in words is "two million, five hundred thirteen thousand, seven hundred thirty-one".