202130999 has 4 divisors (see below), whose sum is σ = 231006864. Its totient is φ = 173255136.

The previous prime is 202130993. The next prime is 202131019. The reversal of 202130999 is 999031202.

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

It is a cyclic number.

It is not a de Polignac number, because 202130999 - 2⁴ = 202130983 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 (202130993) 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, 14437922 + ... + 14437935.

It is an arithmetic number, because the mean of its divisors is an integer number (57751716).

Almost surely, 2^202130999 is an apocalyptic number.

202130999 is a deficient number, since it is larger than the sum of its proper divisors (28875865).

202130999 is an equidigital number, since it uses as much as digits as its factorization.

202130999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28875864.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 202130999 is about 14217.2781853630. The cubic root of 202130999 is about 586.8732403924.

The spelling of 202130999 in words is "two hundred two million, one hundred thirty thousand, nine hundred ninety-nine".