312420061 has 2 divisors, whose sum is σ = 312420062. Its totient is φ = 312420060.

The previous prime is 312420029. The next prime is 312420079. The reversal of 312420061 is 160024213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199656900 + 112763161 = 14130^2 + 10619^2 .

It is a cyclic number.

It is not a de Polignac number, because 312420061 - 2⁵ = 312420029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312420461) 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, 156210030 + 156210031.

It is an arithmetic number, because the mean of its divisors is an integer number (156210031).

Almost surely, 2^312420061 is an apocalyptic number.

It is an amenable number.

312420061 is a deficient number, since it is larger than the sum of its proper divisors (1).

312420061 is an equidigital number, since it uses as much as digits as its factorization.

312420061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 312420061 is about 17675.4083686912. The cubic root of 312420061 is about 678.5465357928.

Adding to 312420061 its reverse (160024213), we get a palindrome (472444274).

The spelling of 312420061 in words is "three hundred twelve million, four hundred twenty thousand, sixty-one".