231115011 has 8 divisors (see below), whose sum is σ = 312493824. Its totient is φ = 151906440.

The previous prime is 231115009. The next prime is 231115021. The reversal of 231115011 is 110511132.

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

It is not a de Polignac number, because 231115011 - 2¹ = 231115009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231115021) 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, 542311 + ... + 542736.

It is an arithmetic number, because the mean of its divisors is an integer number (39061728).

Almost surely, 2^231115011 is an apocalyptic number.

231115011 is a deficient number, since it is larger than the sum of its proper divisors (81378813).

231115011 is a wasteful number, since it uses less digits than its factorization.

231115011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085121.

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 231115011 is about 15202.4672668617. The cubic root of 231115011 is about 613.6810573198.

Adding to 231115011 its reverse (110511132), we get a palindrome (341626143).

The spelling of 231115011 in words is "two hundred thirty-one million, one hundred fifteen thousand, eleven".