920280311 has 2 divisors, whose sum is σ = 920280312. Its totient is φ = 920280310.

The previous prime is 920280271. The next prime is 920280323. The reversal of 920280311 is 113082029.

It is a strong prime.

It is an emirp because it is prime and its reverse (113082029) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-920280311 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920280331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460140155 + 460140156.

It is an arithmetic number, because the mean of its divisors is an integer number (460140156).

Almost surely, 2^920280311 is an apocalyptic number.

920280311 is a deficient number, since it is larger than the sum of its proper divisors (1).

920280311 is an equidigital number, since it uses as much as digits as its factorization.

920280311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 920280311 is about 30336.1222142844. The cubic root of 920280311 is about 972.6875942125.

The spelling of 920280311 in words is "nine hundred twenty million, two hundred eighty thousand, three hundred eleven".