620365231 has 2 divisors, whose sum is σ = 620365232. Its totient is φ = 620365230.

The previous prime is 620365217. The next prime is 620365259. The reversal of 620365231 is 132563026.

It is an a-pointer prime, because the next prime (620365259) can be obtained adding 620365231 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 620365231 - 2¹³ = 620357039 is a prime.

It is a super-2 number, since 2×620365231² = 769706039667366722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 620365231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620362231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310182615 + 310182616.

It is an arithmetic number, because the mean of its divisors is an integer number (310182616).

Almost surely, 2^620365231 is an apocalyptic number.

620365231 is a deficient number, since it is larger than the sum of its proper divisors (1).

620365231 is an equidigital number, since it uses as much as digits as its factorization.

620365231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 620365231 is about 24907.1321311788. The cubic root of 620365231 is about 852.8693026474.

The spelling of 620365231 in words is "six hundred twenty million, three hundred sixty-five thousand, two hundred thirty-one".