312101223 has 16 divisors (see below), whose sum is σ = 475829760. Its totient is φ = 178250976.

The previous prime is 312101221. The next prime is 312101233. The reversal of 312101223 is 322101213.

It is not a de Polignac number, because 312101223 - 2¹ = 312101221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312101221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75886 + ... + 79892.

It is an arithmetic number, because the mean of its divisors is an integer number (29739360).

Almost surely, 2^312101223 is an apocalyptic number.

312101223 is a deficient number, since it is larger than the sum of its proper divisors (163728537).

312101223 is a wasteful number, since it uses less digits than its factorization.

312101223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7726.

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

The square root of 312101223 is about 17666.3868122488. The cubic root of 312101223 is about 678.3156286627.

Adding to 312101223 its reverse (322101213), we get a palindrome (634202436).

The spelling of 312101223 in words is "three hundred twelve million, one hundred one thousand, two hundred twenty-three".