233121030 has 32 divisors (see below), whose sum is σ = 570050784. Its totient is φ = 60992256.

The previous prime is 233121011. The next prime is 233121037. The reversal of 233121030 is 30121332.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233121037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71719 + ... + 74898.

It is an arithmetic number, because the mean of its divisors is an integer number (17814087).

Almost surely, 2^233121030 is an apocalyptic number.

233121030 is an abundant number, since it is smaller than the sum of its proper divisors (336929754).

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

233121030 is a wasteful number, since it uses less digits than its factorization.

233121030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146680.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 233121030 is about 15268.3014772436. The cubic root of 233121030 is about 615.4514762730.

Adding to 233121030 its reverse (30121332), we get a palindrome (263242362).

It can be divided in two parts, 23312 and 1030, that added together give a palindrome (24342).

The spelling of 233121030 in words is "two hundred thirty-three million, one hundred twenty-one thousand, thirty".