20077311 has 4 divisors (see below), whose sum is σ = 26769752. Its totient is φ = 13384872.

The previous prime is 20077307. The next prime is 20077313. The reversal of 20077311 is 11377002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20077311 - 2² = 20077307 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 (20077313) 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, 3346216 + ... + 3346221.

It is an arithmetic number, because the mean of its divisors is an integer number (6692438).

Almost surely, 2^20077311 is an apocalyptic number.

20077311 is a deficient number, since it is larger than the sum of its proper divisors (6692441).

20077311 is an equidigital number, since it uses as much as digits as its factorization.

20077311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6692440.

The product of its (nonzero) digits is 294, while the sum is 21.

The square root of 20077311 is about 4480.7712505773. The cubic root of 20077311 is about 271.7910691907.

The spelling of 20077311 in words is "twenty million, seventy-seven thousand, three hundred eleven".