312223314181 has 2 divisors, whose sum is σ = 312223314182. Its totient is φ = 312223314180.

The previous prime is 312223314101. The next prime is 312223314281. The reversal of 312223314181 is 181413322213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163647757156 + 148575557025 = 404534^2 + 385455^2 .

It is a cyclic number.

It is not a de Polignac number, because 312223314181 - 2¹⁵ = 312223281413 is a prime.

It is a super-2 number, since 2×312223314181² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312223314101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156111657090 + 156111657091.

It is an arithmetic number, because the mean of its divisors is an integer number (156111657091).

Almost surely, 2^312223314181 is an apocalyptic number.

It is an amenable number.

312223314181 is a deficient number, since it is larger than the sum of its proper divisors (1).

312223314181 is an equidigital number, since it uses as much as digits as its factorization.

312223314181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

Adding to 312223314181 its reverse (181413322213), we get a palindrome (493636636394).

The spelling of 312223314181 in words is "three hundred twelve billion, two hundred twenty-three million, three hundred fourteen thousand, one hundred eighty-one".