231220202 has 16 divisors (see below), whose sum is σ = 359399040. Its totient is φ = 111488832.

The previous prime is 231220193. The next prime is 231220217. The reversal of 231220202 is 202022132.

231220202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10223 + ... + 23810.

It is an arithmetic number, because the mean of its divisors is an integer number (22462440).

Almost surely, 2^231220202 is an apocalyptic number.

231220202 is a deficient number, since it is larger than the sum of its proper divisors (128178838).

231220202 is a wasteful number, since it uses less digits than its factorization.

231220202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34157.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 231220202 is about 15205.9265419770. The cubic root of 231220202 is about 613.7741479597.

Adding to 231220202 its reverse (202022132), we get a palindrome (433242334).

The spelling of 231220202 in words is "two hundred thirty-one million, two hundred twenty thousand, two hundred two".