231311133003 has 4 divisors (see below), whose sum is σ = 308414844008. Its totient is φ = 154207422000.

The previous prime is 231311132999. The next prime is 231311133019. The reversal of 231311133003 is 300331113132.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 231311133003 - 2² = 231311132999 is a prime.

It is a super-3 number, since 3×231311133003³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231311133103) 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 3 ways as a sum of consecutive naturals, for example, 38551855498 + ... + 38551855503.

It is an arithmetic number, because the mean of its divisors is an integer number (77103711002).

Almost surely, 2^231311133003 is an apocalyptic number.

231311133003 is a deficient number, since it is larger than the sum of its proper divisors (77103711005).

231311133003 is an equidigital number, since it uses as much as digits as its factorization.

231311133003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77103711004.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 231311133003 its reverse (300331113132), we get a palindrome (531642246135).

The spelling of 231311133003 in words is "two hundred thirty-one billion, three hundred eleven million, one hundred thirty-three thousand, three".