233535423420 has 144 divisors (see below), whose sum is σ = 763251932352. Its totient is φ = 57457797120.

The previous prime is 233535423391. The next prime is 233535423431. The reversal of 233535423420 is 24324535332.

It is a happy number.

233535423420 is a `hidden beast` number, since 2 + 3 + 353 + 54 + 234 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5033649 + ... + 5079831.

Almost surely, 2^233535423420 is an apocalyptic number.

233535423420 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 233535423420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381625966176).

233535423420 is an abundant number, since it is smaller than the sum of its proper divisors (529716508932).

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

233535423420 is a wasteful number, since it uses less digits than its factorization.

233535423420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48372 (or 48367 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 36.

Adding to 233535423420 its reverse (24324535332), we get a palindrome (257859958752).

The spelling of 233535423420 in words is "two hundred thirty-three billion, five hundred thirty-five million, four hundred twenty-three thousand, four hundred twenty".