312801829 has 2 divisors, whose sum is σ = 312801830. Its totient is φ = 312801828.

The previous prime is 312801799. The next prime is 312801899. The reversal of 312801829 is 928108213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213101604 + 99700225 = 14598^2 + 9985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312801829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312801794 and 312801803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312801899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156400914 + 156400915.

It is an arithmetic number, because the mean of its divisors is an integer number (156400915).

Almost surely, 2^312801829 is an apocalyptic number.

It is an amenable number.

312801829 is a deficient number, since it is larger than the sum of its proper divisors (1).

312801829 is an equidigital number, since it uses as much as digits as its factorization.

312801829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 312801829 is about 17686.2044825904. The cubic root of 312801829 is about 678.8228111687.

The spelling of 312801829 in words is "three hundred twelve million, eight hundred one thousand, eight hundred twenty-nine".