202130312 has 8 divisors (see below), whose sum is σ = 378994350. Its totient is φ = 101065152.

The previous prime is 202130311. The next prime is 202130317. The reversal of 202130312 is 213031202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 174609796 + 27520516 = 13214^2 + 5246^2 .

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

It is not an unprimeable number, because it can be changed into a prime (202130311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12633137 + ... + 12633152.

Almost surely, 2^202130312 is an apocalyptic number.

It is an amenable number.

202130312 is a deficient number, since it is larger than the sum of its proper divisors (176864038).

202130312 is a wasteful number, since it uses less digits than its factorization.

202130312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25266295 (or 25266291 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 202130312 is about 14217.2540245998. The cubic root of 202130312 is about 586.8725755061.

Adding to 202130312 its reverse (213031202), we get a palindrome (415161514).

The spelling of 202130312 in words is "two hundred two million, one hundred thirty thousand, three hundred twelve".