231220133022430 has 32 divisors (see below), whose sum is σ = 432594723695904. Its totient is φ = 88904178781056.

The previous prime is 231220133022419. The next prime is 231220133022451. The reversal of 231220133022430 is 34220331022132.

231220133022430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3764543257 + ... + 3764604676.

It is an arithmetic number, because the mean of its divisors is an integer number (13518585115497).

Almost surely, 2^{231220133022430} is an apocalyptic number.

231220133022430 is a deficient number, since it is larger than the sum of its proper divisors (201374590673474).

231220133022430 is a wasteful number, since it uses less digits than its factorization.

231220133022430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7529148060.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 231220133022430 its reverse (34220331022132), we get a palindrome (265440464044562).

The spelling of 231220133022430 in words is "two hundred thirty-one trillion, two hundred twenty billion, one hundred thirty-three million, twenty-two thousand, four hundred thirty".