312030071 has 2 divisors, whose sum is σ = 312030072. Its totient is φ = 312030070.

The previous prime is 312030041. The next prime is 312030143. The reversal of 312030071 is 170030213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312030071 - 2⁶ = 312030007 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312030001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156015035 + 156015036.

It is an arithmetic number, because the mean of its divisors is an integer number (156015036).

Almost surely, 2^312030071 is an apocalyptic number.

312030071 is a deficient number, since it is larger than the sum of its proper divisors (1).

312030071 is an equidigital number, since it uses as much as digits as its factorization.

312030071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 312030071 is about 17664.3729297136. The cubic root of 312030071 is about 678.2640778856.

Adding to 312030071 its reverse (170030213), we get a palindrome (482060284).

The spelling of 312030071 in words is "three hundred twelve million, thirty thousand, seventy-one".