231311133300 has 144 divisors (see below), whose sum is σ = 723616310592. Its totient is φ = 56711040000.

The previous prime is 231311133281. The next prime is 231311133329. The reversal of 231311133300 is 3331113132.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 860752 + ... + 1097048.

It is an arithmetic number, because the mean of its divisors is an integer number (5025113268).

Almost surely, 2^231311133300 is an apocalyptic number.

231311133300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231311133300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361808155296).

231311133300 is an abundant number, since it is smaller than the sum of its proper divisors (492305177292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231311133300 is a wasteful number, since it uses less digits than its factorization.

231311133300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236578 (or 236571 counting only the distinct ones).

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

Adding to 231311133300 its reverse (3331113132), we get a palindrome (234642246432).

The spelling of 231311133300 in words is "two hundred thirty-one billion, three hundred eleven million, one hundred thirty-three thousand, three hundred".