231223160642 has 8 divisors (see below), whose sum is σ = 347062476816. Its totient is φ = 115535668372.

The previous prime is 231223160611. The next prime is 231223160653. The reversal of 231223160642 is 246061322132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×231223160642² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231223160599 and 231223160608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37952168 + ... + 37958259.

It is an arithmetic number, because the mean of its divisors is an integer number (43382809602).

Almost surely, 2^231223160642 is an apocalyptic number.

231223160642 is a deficient number, since it is larger than the sum of its proper divisors (115839316174).

231223160642 is a wasteful number, since it uses less digits than its factorization.

231223160642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75911952.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 231223160642 its reverse (246061322132), we get a palindrome (477284482774).

The spelling of 231223160642 in words is "two hundred thirty-one billion, two hundred twenty-three million, one hundred sixty thousand, six hundred forty-two".