231390202 has 16 divisors (see below), whose sum is σ = 356430312. Its totient is φ = 112619520.

The previous prime is 231390199. The next prime is 231390223. The reversal of 231390202 is 202093132.

It can be written as a sum of positive squares in 4 ways, for example, as 172423161 + 58967041 = 13131^2 + 7679^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2058 + ... + 21610.

Almost surely, 2^231390202 is an apocalyptic number.

231390202 is a deficient number, since it is larger than the sum of its proper divisors (125040110).

231390202 is a wasteful number, since it uses less digits than its factorization.

231390202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19713.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 231390202 is about 15211.5154406127. The cubic root of 231390202 is about 613.9245328064.

The spelling of 231390202 in words is "two hundred thirty-one million, three hundred ninety thousand, two hundred two".