231132430 has 16 divisors (see below), whose sum is σ = 416242800. Its totient is φ = 92407552.

The previous prime is 231132427. The next prime is 231132431. The reversal of 231132430 is 34231132.

It is a junction number, because it is equal to n+sod(n) for n = 231132398 and 231132407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231132431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22221 + ... + 30919.

It is an arithmetic number, because the mean of its divisors is an integer number (26015175).

Almost surely, 2^231132430 is an apocalyptic number.

231132430 is a deficient number, since it is larger than the sum of its proper divisors (185110370).

231132430 is a wasteful number, since it uses less digits than its factorization.

231132430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11363.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 231132430 is about 15203.0401564950. The cubic root of 231132430 is about 613.6964745238.

Adding to 231132430 its reverse (34231132), we get a palindrome (265363562).

The spelling of 231132430 in words is "two hundred thirty-one million, one hundred thirty-two thousand, four hundred thirty".