312055501 has 2 divisors, whose sum is σ = 312055502. Its totient is φ = 312055500.

The previous prime is 312055483. The next prime is 312055507. The reversal of 312055501 is 105550213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204518601 + 107536900 = 14301^2 + 10370^2 .

It is an emirp because it is prime and its reverse (105550213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312055501 - 2²³ = 303666893 is a prime.

It is a super-2 number, since 2×312055501² = 194757271408722002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312055507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156027750 + 156027751.

It is an arithmetic number, because the mean of its divisors is an integer number (156027751).

Almost surely, 2^312055501 is an apocalyptic number.

It is an amenable number.

312055501 is a deficient number, since it is larger than the sum of its proper divisors (1).

312055501 is an equidigital number, since it uses as much as digits as its factorization.

312055501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 312055501 is about 17665.0927254855. The cubic root of 312055501 is about 678.2825032325.

The spelling of 312055501 in words is "three hundred twelve million, fifty-five thousand, five hundred one".