312201123 has 16 divisors (see below), whose sum is σ = 448680960. Its totient is φ = 191955744.

The previous prime is 312201121. The next prime is 312201133. The reversal of 312201123 is 321102213.

It is not a de Polignac number, because 312201123 - 2¹ = 312201121 is a prime.

It is a super-2 number, since 2×312201123² = 194939082404922258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (312201121) 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 15 ways as a sum of consecutive naturals, for example, 53340 + ... + 58902.

It is an arithmetic number, because the mean of its divisors is an integer number (28042560).

Almost surely, 2^312201123 is an apocalyptic number.

312201123 is a deficient number, since it is larger than the sum of its proper divisors (136479837).

312201123 is a wasteful number, since it uses less digits than its factorization.

312201123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7018.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 312201123 is about 17669.2139893092. The cubic root of 312201123 is about 678.3879946105.

Adding to 312201123 its reverse (321102213), we get a palindrome (633303336).

The spelling of 312201123 in words is "three hundred twelve million, two hundred one thousand, one hundred twenty-three".