312041231 has 4 divisors (see below), whose sum is σ = 315991200. Its totient is φ = 308091264.

The previous prime is 312041221. The next prime is 312041243. The reversal of 312041231 is 132140213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132140213 = 61 ⋅2166233.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312041231 is a prime.

It is a super-2 number, since 2×312041231² = 194739459687990722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312041221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1974866 + ... + 1975023.

It is an arithmetic number, because the mean of its divisors is an integer number (78997800).

Almost surely, 2^312041231 is an apocalyptic number.

312041231 is a deficient number, since it is larger than the sum of its proper divisors (3949969).

312041231 is an equidigital number, since it uses as much as digits as its factorization.

312041231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3949968.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 312041231 is about 17664.6888169591. The cubic root of 312041231 is about 678.2721640046.

Adding to 312041231 its reverse (132140213), we get a palindrome (444181444).

The spelling of 312041231 in words is "three hundred twelve million, forty-one thousand, two hundred thirty-one".