233111430420 has 96 divisors (see below), whose sum is σ = 713030363136. Its totient is φ = 56434012800.

The previous prime is 233111430403. The next prime is 233111430421. The reversal of 233111430420 is 24034111332.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233111430421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236905 + ... + 722735.

It is an arithmetic number, because the mean of its divisors is an integer number (7427399616).

Almost surely, 2^233111430420 is an apocalyptic number.

233111430420 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 233111430420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356515181568).

233111430420 is an abundant number, since it is smaller than the sum of its proper divisors (479918932716).

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

233111430420 is a wasteful number, since it uses less digits than its factorization.

233111430420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486581 (or 486579 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 233111430420 its reverse (24034111332), we get a palindrome (257145541752).

The spelling of 233111430420 in words is "two hundred thirty-three billion, one hundred eleven million, four hundred thirty thousand, four hundred twenty".