620228831 has 2 divisors, whose sum is σ = 620228832. Its totient is φ = 620228830.

The previous prime is 620228809. The next prime is 620228911. The reversal of 620228831 is 138822026.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 620228831 - 2¹⁰ = 620227807 is a prime.

It is a super-2 number, since 2×620228831² = 769367605607253122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620222831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310114415 + 310114416.

It is an arithmetic number, because the mean of its divisors is an integer number (310114416).

Almost surely, 2^620228831 is an apocalyptic number.

620228831 is a deficient number, since it is larger than the sum of its proper divisors (1).

620228831 is an equidigital number, since it uses as much as digits as its factorization.

620228831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 620228831 is about 24904.3938091253. The cubic root of 620228831 is about 852.8067911386.

The spelling of 620228831 in words is "six hundred twenty million, two hundred twenty-eight thousand, eight hundred thirty-one".