312212533 has 2 divisors, whose sum is σ = 312212534. Its totient is φ = 312212532.

The previous prime is 312212519. The next prime is 312212539. The reversal of 312212533 is 335212213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167780209 + 144432324 = 12953^2 + 12018^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312212533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312212539) 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 as a sum of consecutive naturals, namely, 156106266 + 156106267.

It is an arithmetic number, because the mean of its divisors is an integer number (156106267).

Almost surely, 2^312212533 is an apocalyptic number.

It is an amenable number.

312212533 is a deficient number, since it is larger than the sum of its proper divisors (1).

312212533 is an equidigital number, since it uses as much as digits as its factorization.

312212533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 22.

The square root of 312212533 is about 17669.5368643324. The cubic root of 312212533 is about 678.3962588480.

Adding to 312212533 its reverse (335212213), we get a palindrome (647424746).

The spelling of 312212533 in words is "three hundred twelve million, two hundred twelve thousand, five hundred thirty-three".