312634081 has 2 divisors, whose sum is σ = 312634082. Its totient is φ = 312634080.

The previous prime is 312634051. The next prime is 312634099. The reversal of 312634081 is 180436213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289680400 + 22953681 = 17020^2 + 4791^2 .

It is a cyclic number.

It is not a de Polignac number, because 312634081 - 2⁷ = 312633953 is a prime.

It is a super-2 number, since 2×312634081² = 195480137205429122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (312634051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156317040 + 156317041.

It is an arithmetic number, because the mean of its divisors is an integer number (156317041).

Almost surely, 2^312634081 is an apocalyptic number.

It is an amenable number.

312634081 is a deficient number, since it is larger than the sum of its proper divisors (1).

312634081 is an equidigital number, since it uses as much as digits as its factorization.

312634081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 312634081 is about 17681.4615063348. The cubic root of 312634081 is about 678.7014440923.

It can be divided in two parts, 31263 and 4081, that added together give a square (35344 = 188²).

The spelling of 312634081 in words is "three hundred twelve million, six hundred thirty-four thousand, eighty-one".