231142030133 has 16 divisors (see below), whose sum is σ = 278146496640. Its totient is φ = 187639675200.

The previous prime is 231142030129. The next prime is 231142030139. The reversal of 231142030133 is 331030241132.

It is a cyclic number.

It is not a de Polignac number, because 231142030133 - 2² = 231142030129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231142030099 and 231142030108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231142030139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209243 + ... + 711383.

It is an arithmetic number, because the mean of its divisors is an integer number (17384156040).

Almost surely, 2^231142030133 is an apocalyptic number.

It is an amenable number.

231142030133 is a deficient number, since it is larger than the sum of its proper divisors (47004466507).

231142030133 is a wasteful number, since it uses less digits than its factorization.

231142030133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505628.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 231142030133 its reverse (331030241132), we get a palindrome (562172271265).

The spelling of 231142030133 in words is "two hundred thirty-one billion, one hundred forty-two million, thirty thousand, one hundred thirty-three".