231020233101133 has 6 divisors (see below), whose sum is σ = 268737822178926. Its totient is φ = 198017342658072.

The previous prime is 231020233101121. The next prime is 231020233101187. The reversal of 231020233101133 is 331101332020132.

It can be written as a sum of positive squares in only one way, i.e., 211055752506564 + 19964480594569 = 14527758^2 + 4468163^2 .

It is a de Polignac number, because none of the positive numbers 2^k-231020233101133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231020233101098 and 231020233101107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231020233101103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2357349317310 + ... + 2357349317407.

It is an arithmetic number, because the mean of its divisors is an integer number (44789637029821).

Almost surely, 2^{231020233101133} is an apocalyptic number.

It is an amenable number.

231020233101133 is a deficient number, since it is larger than the sum of its proper divisors (37717589077793).

231020233101133 is an equidigital number, since it uses as much as digits as its factorization.

231020233101133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4714698634731 (or 4714698634724 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 231020233101133 its reverse (331101332020132), we get a palindrome (562121565121265).

The spelling of 231020233101133 in words is "two hundred thirty-one trillion, twenty billion, two hundred thirty-three million, one hundred one thousand, one hundred thirty-three".