231002011311 has 16 divisors (see below), whose sum is σ = 316736416224. Its totient is φ = 149645245824.

The previous prime is 231002011291. The next prime is 231002011351. The reversal of 231002011311 is 113110200132.

It is a happy number.

It is not a de Polignac number, because 231002011311 - 2¹⁹ = 231001487023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231002011351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1260316 + ... + 1431921.

It is an arithmetic number, because the mean of its divisors is an integer number (19796026014).

Almost surely, 2^231002011311 is an apocalyptic number.

231002011311 is a deficient number, since it is larger than the sum of its proper divisors (85734404913).

231002011311 is a wasteful number, since it uses less digits than its factorization.

231002011311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2693050.

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

Adding to 231002011311 its reverse (113110200132), we get a palindrome (344112211443).

The spelling of 231002011311 in words is "two hundred thirty-one billion, two million, eleven thousand, three hundred eleven".