312432231 has 8 divisors (see below), whose sum is σ = 420263280. Its totient is φ = 206444672.

The previous prime is 312432227. The next prime is 312432233. The reversal of 312432231 is 132234213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 312432231 - 2² = 312432227 is a prime.

It is a super-2 number, since 2×312432231² = 195227797935274722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312432198 and 312432207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312432233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460476 + ... + 461153.

It is an arithmetic number, because the mean of its divisors is an integer number (52532910).

Almost surely, 2^312432231 is an apocalyptic number.

312432231 is a deficient number, since it is larger than the sum of its proper divisors (107831049).

312432231 is a wasteful number, since it uses less digits than its factorization.

312432231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921745.

The product of its digits is 864, while the sum is 21.

The square root of 312432231 is about 17675.7526289547. The cubic root of 312432231 is about 678.5553463710. Note that the first 3 decimals are identical.

Adding to 312432231 its reverse (132234213), we get a palindrome (444666444).

The spelling of 312432231 in words is "three hundred twelve million, four hundred thirty-two thousand, two hundred thirty-one".