231101220133 has 8 divisors (see below), whose sum is σ = 266452987968. Its totient is φ = 196333779264.

The previous prime is 231101220107. The next prime is 231101220149. The reversal of 231101220133 is 331022101132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231101220133 - 2⁹ = 231101219621 is a prime.

It is a super-2 number, since 2×231101220133² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231101220133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231101221133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146080891 + ... + 146082472.

It is an arithmetic number, because the mean of its divisors is an integer number (33306623496).

Almost surely, 2^231101220133 is an apocalyptic number.

It is an amenable number.

231101220133 is a deficient number, since it is larger than the sum of its proper divisors (35351767835).

231101220133 is a wasteful number, since it uses less digits than its factorization.

231101220133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292163483.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 231101220133 its reverse (331022101132), we get a palindrome (562123321265).

The spelling of 231101220133 in words is "two hundred thirty-one billion, one hundred one million, two hundred twenty thousand, one hundred thirty-three".