231133011 has 8 divisors (see below), whose sum is σ = 308704704. Its totient is φ = 153825000.

The previous prime is 231133009. The next prime is 231133039. The reversal of 231133011 is 110331132.

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

It is not a de Polignac number, because 231133011 - 2¹ = 231133009 is a prime.

It is a super-2 number, since 2×231133011² = 106844937547852242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231133211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63865 + ... + 67386.

It is an arithmetic number, because the mean of its divisors is an integer number (38588088).

Almost surely, 2^231133011 is an apocalyptic number.

231133011 is a deficient number, since it is larger than the sum of its proper divisors (77571693).

231133011 is a wasteful number, since it uses less digits than its factorization.

231133011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131841.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 231133011 is about 15203.0592645033. The cubic root of 231133011 is about 613.6969887418.

Adding to 231133011 its reverse (110331132), we get a palindrome (341464143).

The spelling of 231133011 in words is "two hundred thirty-one million, one hundred thirty-three thousand, eleven".