231133430 has 16 divisors (see below), whose sum is σ = 453862224. Its totient is φ = 84048480.

The previous prime is 231133429. The next prime is 231133447. The reversal of 231133430 is 34331132.

231133430 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1050497 + ... + 1050716.

It is an arithmetic number, because the mean of its divisors is an integer number (28366389).

Almost surely, 2^231133430 is an apocalyptic number.

231133430 is a deficient number, since it is larger than the sum of its proper divisors (222728794).

231133430 is a wasteful number, since it uses less digits than its factorization.

231133430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101231.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 231133430 is about 15203.0730446183. The cubic root of 231133430 is about 613.6973595800.

Adding to 231133430 its reverse (34331132), we get a palindrome (265464562).

The spelling of 231133430 in words is "two hundred thirty-one million, one hundred thirty-three thousand, four hundred thirty".