312420231 has 12 divisors (see below), whose sum is σ = 452617152. Its totient is φ = 207660096.

The previous prime is 312420191. The next prime is 312420257. The reversal of 312420231 is 132024213.

312420231 is a `hidden beast` number, since 3 + 12 + 420 + 231 = 666.

It is not a de Polignac number, because 312420231 - 2⁶ = 312420167 is a prime.

It is a super-2 number, since 2×312420231² = 195212801476186722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312420331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48471 + ... + 54536.

It is an arithmetic number, because the mean of its divisors is an integer number (37718096).

Almost surely, 2^312420231 is an apocalyptic number.

312420231 is a deficient number, since it is larger than the sum of its proper divisors (140196921).

312420231 is a wasteful number, since it uses less digits than its factorization.

312420231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103350 (or 103347 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 312420231 is about 17675.4131776318. The cubic root of 312420231 is about 678.5466588674.

Adding to 312420231 its reverse (132024213), we get a palindrome (444444444).

The spelling of 312420231 in words is "three hundred twelve million, four hundred twenty thousand, two hundred thirty-one".