312312029 has 2 divisors, whose sum is σ = 312312030. Its totient is φ = 312312028.

The previous prime is 312312019. The next prime is 312312037. The reversal of 312312029 is 920213213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 234396100 + 77915929 = 15310^2 + 8827^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312312029 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 312311995 and 312312013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312312019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156156014 + 156156015.

It is an arithmetic number, because the mean of its divisors is an integer number (156156015).

Almost surely, 2^312312029 is an apocalyptic number.

It is an amenable number.

312312029 is a deficient number, since it is larger than the sum of its proper divisors (1).

312312029 is an equidigital number, since it uses as much as digits as its factorization.

312312029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 312312029 is about 17672.3521071758. The cubic root of 312312029 is about 678.4683150472.

The spelling of 312312029 in words is "three hundred twelve million, three hundred twelve thousand, twenty-nine".