231101220134 has 16 divisors (see below), whose sum is σ = 349225324560. Its totient is φ = 114693157920.

The previous prime is 231101220107. The next prime is 231101220149. The reversal of 231101220134 is 431022101132.

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, 1156544 + ... + 1341564.

It is an arithmetic number, because the mean of its divisors is an integer number (21826582785).

Almost surely, 2^231101220134 is an apocalyptic number.

231101220134 is a deficient number, since it is larger than the sum of its proper divisors (118124104426).

231101220134 is a wasteful number, since it uses less digits than its factorization.

231101220134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189655.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 231101220134 its reverse (431022101132), we get a palindrome (662123321266).

The spelling of 231101220134 in words is "two hundred thirty-one billion, one hundred one million, two hundred twenty thousand, one hundred thirty-four".