312103231 has 8 divisors (see below), whose sum is σ = 343848528. Its totient is φ = 280920000.

The previous prime is 312103229. The next prime is 312103237. The reversal of 312103231 is 132301213.

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

It is a cyclic number.

It is not a de Polignac number, because 312103231 - 2¹ = 312103229 is a prime.

It is a super-2 number, since 2×312103231² = 194816853601278722, 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 (312103237) 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, 139350 + ... + 141571.

It is an arithmetic number, because the mean of its divisors is an integer number (42981066).

Almost surely, 2^312103231 is an apocalyptic number.

312103231 is a deficient number, since it is larger than the sum of its proper divisors (31745297).

312103231 is a wasteful number, since it uses less digits than its factorization.

312103231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281033.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 312103231 is about 17666.4436432464. The cubic root of 312103231 is about 678.3170833775.

Adding to 312103231 its reverse (132301213), we get a palindrome (444404444).

The spelling of 312103231 in words is "three hundred twelve million, one hundred three thousand, two hundred thirty-one".