231111133134 has 32 divisors (see below), whose sum is σ = 528487255296. Its totient is φ = 66002597760.

The previous prime is 231111133111. The next prime is 231111133147. The reversal of 231111133134 is 431331111132.

It is a Curzon number.

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, 1118427 + ... + 1308854.

It is an arithmetic number, because the mean of its divisors is an integer number (16515226728).

Almost surely, 2^231111133134 is an apocalyptic number.

231111133134 is an abundant number, since it is smaller than the sum of its proper divisors (297376122162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231111133134 is a wasteful number, since it uses less digits than its factorization.

231111133134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429560.

The product of its digits is 648, while the sum is 24.

Adding to 231111133134 its reverse (431331111132), we get a palindrome (662442244266).

The spelling of 231111133134 in words is "two hundred thirty-one billion, one hundred eleven million, one hundred thirty-three thousand, one hundred thirty-four".