231122011 has 4 divisors (see below), whose sum is σ = 231356224. Its totient is φ = 230887800.

The previous prime is 231121973. The next prime is 231122027. The reversal of 231122011 is 110221132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231122011 - 2¹³ = 231113819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231121982 and 231122000.

It is not an unprimeable number, because it can be changed into a prime (231122071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115620 + ... + 117601.

It is an arithmetic number, because the mean of its divisors is an integer number (57839056).

Almost surely, 2^231122011 is an apocalyptic number.

231122011 is a deficient number, since it is larger than the sum of its proper divisors (234213).

231122011 is an equidigital number, since it uses as much as digits as its factorization.

231122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234212.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 231122011 is about 15202.6974909060. The cubic root of 231122011 is about 613.6872529711.

Adding to 231122011 its reverse (110221132), we get a palindrome (341343143).

The spelling of 231122011 in words is "two hundred thirty-one million, one hundred twenty-two thousand, eleven".