230172131221532 has 12 divisors (see below), whose sum is σ = 402821187229776. Its totient is φ = 115080363441600.

The previous prime is 230172131221507. The next prime is 230172131221547. The reversal of 230172131221532 is 235122131271032.

It is a junction number, because it is equal to n+sod(n) for n = 230172131221492 and 230172131221501.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1425451469 + ... + 1425612932.

It is an arithmetic number, because the mean of its divisors is an integer number (33568432269148).

Almost surely, 2^{230172131221532} is an apocalyptic number.

It is an amenable number.

230172131221532 is a deficient number, since it is larger than the sum of its proper divisors (172649056008244).

230172131221532 is a wasteful number, since it uses less digits than its factorization.

230172131221532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2851084588 (or 2851084586 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

Adding to 230172131221532 its reverse (235122131271032), we get a palindrome (465294262492564).

The spelling of 230172131221532 in words is "two hundred thirty trillion, one hundred seventy-two billion, one hundred thirty-one million, two hundred twenty-one thousand, five hundred thirty-two".