231402202 has 4 divisors (see below), whose sum is σ = 347103306. Its totient is φ = 115701100.

The previous prime is 231402173. The next prime is 231402209. The reversal of 231402202 is 202204132.

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

It can be written as a sum of positive squares in only one way, i.e., 212314041 + 19088161 = 14571^2 + 4369^2 .

It is not an unprimeable number, because it can be changed into a prime (231402209) 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 as a sum of consecutive naturals, namely, 57850549 + ... + 57850552.

Almost surely, 2^231402202 is an apocalyptic number.

231402202 is a deficient number, since it is larger than the sum of its proper divisors (115701104).

231402202 is a wasteful number, since it uses less digits than its factorization.

231402202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115701103.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 231402202 is about 15211.9098735169. The cubic root of 231402202 is about 613.9351454238.

Adding to 231402202 its reverse (202204132), we get a palindrome (433606334).

The spelling of 231402202 in words is "two hundred thirty-one million, four hundred two thousand, two hundred two".