231331011 has 8 divisors (see below), whose sum is σ = 308699664. Its totient is φ = 154091520.

The previous prime is 231331007. The next prime is 231331049. The reversal of 231331011 is 110133132.

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

It is not a de Polignac number, because 231331011 - 2² = 231331007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231331081) 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, 28030 + ... + 35331.

It is an arithmetic number, because the mean of its divisors is an integer number (38587458).

Almost surely, 2^231331011 is an apocalyptic number.

231331011 is a deficient number, since it is larger than the sum of its proper divisors (77368653).

231331011 is a wasteful number, since it uses less digits than its factorization.

231331011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64581.

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

The square root of 231331011 is about 15209.5697177797. The cubic root of 231331011 is about 613.8721798176.

Adding to 231331011 its reverse (110133132), we get a palindrome (341464143).

The spelling of 231331011 in words is "two hundred thirty-one million, three hundred thirty-one thousand, eleven".