20267313 has 16 divisors (see below), whose sum is σ = 29568000. Its totient is φ = 12246480.

The previous prime is 20267297. The next prime is 20267321. The reversal of 20267313 is 31376202.

It is not a de Polignac number, because 20267313 - 2⁴ = 20267297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20267323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13788 + ... + 15186.

It is an arithmetic number, because the mean of its divisors is an integer number (1848000).

Almost surely, 2^20267313 is an apocalyptic number.

It is an amenable number.

20267313 is a deficient number, since it is larger than the sum of its proper divisors (9300687).

20267313 is a wasteful number, since it uses less digits than its factorization.

20267313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 20267313 is about 4501.9232556764. The cubic root of 20267313 is about 272.6457453382.

Subtracting 20267313 from its reverse (31376202), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 2026 and 7313, that added together give a palindrome (9339).

The spelling of 20267313 in words is "twenty million, two hundred sixty-seven thousand, three hundred thirteen".