231103012011 has 8 divisors (see below), whose sum is σ = 309226175040. Its totient is φ = 153524261832.

The previous prime is 231103011947. The next prime is 231103012013. The reversal of 231103012011 is 110210301132.

It is a happy number.

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

It is not a de Polignac number, because 231103012011 - 2⁶ = 231103011947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231103012013) 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, 136102221 + ... + 136103918.

It is an arithmetic number, because the mean of its divisors is an integer number (38653271880).

Almost surely, 2^231103012011 is an apocalyptic number.

231103012011 is a deficient number, since it is larger than the sum of its proper divisors (78123163029).

231103012011 is a wasteful number, since it uses less digits than its factorization.

231103012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272206425.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 231103012011 its reverse (110210301132), we get a palindrome (341313313143).

The spelling of 231103012011 in words is "two hundred thirty-one billion, one hundred three million, twelve thousand, eleven".