231020031011 has 8 divisors (see below), whose sum is σ = 288024973824. Its totient is φ = 180015608520.

The previous prime is 231020031001. The next prime is 231020031031. The reversal of 231020031011 is 110130020132.

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

It is not a de Polignac number, because 231020031011 - 2³⁴ = 213840161827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231020031001) 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, 1500129995 + ... + 1500130148.

It is an arithmetic number, because the mean of its divisors is an integer number (36003121728).

Almost surely, 2^231020031011 is an apocalyptic number.

231020031011 is a deficient number, since it is larger than the sum of its proper divisors (57004942813).

231020031011 is a wasteful number, since it uses less digits than its factorization.

231020031011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000260161.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 231020031011 its reverse (110130020132), we get a palindrome (341150051143).

The spelling of 231020031011 in words is "two hundred thirty-one billion, twenty million, thirty-one thousand, eleven".