202102312 has 8 divisors (see below), whose sum is σ = 378941850. Its totient is φ = 101051152.

The previous prime is 202102291. The next prime is 202102321. The reversal of 202102312 is 213201202.

It can be written as a sum of positive squares in only one way, i.e., 202037796 + 64516 = 14214^2 + 254^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 202102292 and 202102301.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12631387 + ... + 12631402.

Almost surely, 2^202102312 is an apocalyptic number.

It is an amenable number.

202102312 is a deficient number, since it is larger than the sum of its proper divisors (176839538).

202102312 is a wasteful number, since it uses less digits than its factorization.

202102312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25262795 (or 25262791 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 202102312 is about 14216.2692715072. The cubic root of 202102312 is about 586.8454755118.

Adding to 202102312 its reverse (213201202), we get a palindrome (415303514).

It can be divided in two parts, 20210 and 2312, that added together give a palindrome (22522).

The spelling of 202102312 in words is "two hundred two million, one hundred two thousand, three hundred twelve".