209931002 has 8 divisors (see below), whose sum is σ = 316717236. Its totient is φ = 104358592.

The previous prime is 209930993. The next prime is 209931013. The reversal of 209931002 is 200139902.

209931002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 166384201 + 43546801 = 12899^2 + 6599^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303023 + ... + 303714.

Almost surely, 2^209931002 is an apocalyptic number.

209931002 is a deficient number, since it is larger than the sum of its proper divisors (106786234).

209931002 is a wasteful number, since it uses less digits than its factorization.

209931002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606912.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 209931002 is about 14488.9958934358. The cubic root of 209931002 is about 594.3270899348.

The spelling of 209931002 in words is "two hundred nine million, nine hundred thirty-one thousand, two".