231643622 has 16 divisors (see below), whose sum is σ = 397420800. Its totient is φ = 99196488.

The previous prime is 231643613. The next prime is 231643627. The reversal of 231643622 is 226346132.

It is a super-2 number, since 2×231643622² = 107317535226557768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231643627) 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 in 7 ways as a sum of consecutive naturals, for example, 13673 + ... + 25499.

It is an arithmetic number, because the mean of its divisors is an integer number (24838800).

Almost surely, 2^231643622 is an apocalyptic number.

231643622 is a deficient number, since it is larger than the sum of its proper divisors (165777178).

231643622 is a wasteful number, since it uses less digits than its factorization.

231643622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13235.

The product of its digits is 10368, while the sum is 29.

The square root of 231643622 is about 15219.8430346702. The cubic root of 231643622 is about 614.1485757011.

Adding to 231643622 its reverse (226346132), we get a palindrome (457989754).

The spelling of 231643622 in words is "two hundred thirty-one million, six hundred forty-three thousand, six hundred twenty-two".