231420312202 has 4 divisors (see below), whose sum is σ = 347130468306. Its totient is φ = 115710156100.

The previous prime is 231420312173. The next prime is 231420312269. The reversal of 231420312202 is 202213024132.

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., 229154647401 + 2265664801 = 478701^2 + 47599^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57855078049 + ... + 57855078052.

Almost surely, 2^231420312202 is an apocalyptic number.

231420312202 is a deficient number, since it is larger than the sum of its proper divisors (115710156104).

231420312202 is a wasteful number, since it uses less digits than its factorization.

231420312202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115710156103.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 231420312202 its reverse (202213024132), we get a palindrome (433633336334).

The spelling of 231420312202 in words is "two hundred thirty-one billion, four hundred twenty million, three hundred twelve thousand, two hundred two".