231220043132 has 24 divisors (see below), whose sum is σ = 435819014400. Its totient is φ = 106702698816.

The previous prime is 231220043111. The next prime is 231220043149. The reversal of 231220043132 is 231340022132.

231220043132 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 231220043098 and 231220043107.

It is a congruent number.

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, 101669 + ... + 687587.

It is an arithmetic number, because the mean of its divisors is an integer number (18159125600).

Almost surely, 2^231220043132 is an apocalyptic number.

It is an amenable number.

231220043132 is a deficient number, since it is larger than the sum of its proper divisors (204598971268).

231220043132 is a wasteful number, since it uses less digits than its factorization.

231220043132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593525 (or 593523 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 231220043132 its reverse (231340022132), we get a palindrome (462560065264).

The spelling of 231220043132 in words is "two hundred thirty-one billion, two hundred twenty million, forty-three thousand, one hundred thirty-two".