20676311 has 4 divisors (see below), whose sum is σ = 20721624. Its totient is φ = 20631000.

The previous prime is 20676277. The next prime is 20676329. The reversal of 20676311 is 11367602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11367602 = 2 ⋅5683801.

It is a cyclic number.

It is not a de Polignac number, because 20676311 - 2⁶ = 20676247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20676361) 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, 21965 + ... + 22886.

It is an arithmetic number, because the mean of its divisors is an integer number (5180406).

Almost surely, 2^20676311 is an apocalyptic number.

20676311 is a deficient number, since it is larger than the sum of its proper divisors (45313).

20676311 is an equidigital number, since it uses as much as digits as its factorization.

20676311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45312.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 20676311 is about 4547.1211771845. The cubic root of 20676311 is about 274.4675582068.

The spelling of 20676311 in words is "twenty million, six hundred seventy-six thousand, three hundred eleven".