312212110477 has 2 divisors, whose sum is σ = 312212110478. Its totient is φ = 312212110476.

The previous prime is 312212110433. The next prime is 312212110487. The reversal of 312212110477 is 774011212213.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 273158841316 + 39053269161 = 522646^2 + 197619^2 .

It is a cyclic number.

It is not a de Polignac number, because 312212110477 - 2¹⁹ = 312211586189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312212110487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156106055238 + 156106055239.

It is an arithmetic number, because the mean of its divisors is an integer number (156106055239).

Almost surely, 2^312212110477 is an apocalyptic number.

It is an amenable number.

312212110477 is a deficient number, since it is larger than the sum of its proper divisors (1).

312212110477 is an equidigital number, since it uses as much as digits as its factorization.

312212110477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 31.

The spelling of 312212110477 in words is "three hundred twelve billion, two hundred twelve million, one hundred ten thousand, four hundred seventy-seven".