1023020199 has 10 divisors (see below), whose sum is σ = 1528215480. Its totient is φ = 682013412.

The previous prime is 1023020191. The next prime is 1023020209. The reversal of 1023020199 is 9910203201.

It is not a de Polignac number, because 1023020199 - 2³ = 1023020191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023020191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6314859 + ... + 6315020.

It is an arithmetic number, because the mean of its divisors is an integer number (152821548).

Almost surely, 2^1023020199 is an apocalyptic number.

1023020199 is a deficient number, since it is larger than the sum of its proper divisors (505195281).

1023020199 is an equidigital number, since it uses as much as digits as its factorization.

1023020199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12629891 (or 12629882 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 1023020199 is about 31984.6869454744. The cubic root of 1023020199 is about 1007.6152602692.

The spelling of 1023020199 in words is "one billion, twenty-three million, twenty thousand, one hundred ninety-nine".