312408973 has 2 divisors, whose sum is σ = 312408974. Its totient is φ = 312408972.

The previous prime is 312408961. The next prime is 312409037. The reversal of 312408973 is 379804213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 252237924 + 60171049 = 15882^2 + 7757^2 .

It is a cyclic number.

It is not a de Polignac number, because 312408973 - 2⁹ = 312408461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312408073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156204486 + 156204487.

It is an arithmetic number, because the mean of its divisors is an integer number (156204487).

Almost surely, 2^312408973 is an apocalyptic number.

It is an amenable number.

312408973 is a deficient number, since it is larger than the sum of its proper divisors (1).

312408973 is an equidigital number, since it uses as much as digits as its factorization.

312408973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 312408973 is about 17675.0947097887. The cubic root of 312408973 is about 678.5385083388.

The spelling of 312408973 in words is "three hundred twelve million, four hundred eight thousand, nine hundred seventy-three".