312620773 has 2 divisors, whose sum is σ = 312620774. Its totient is φ = 312620772.

The previous prime is 312620767. The next prime is 312620839. The reversal of 312620773 is 377026213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192016449 + 120604324 = 13857^2 + 10982^2 .

It is a cyclic number.

It is not a de Polignac number, because 312620773 - 2¹⁷ = 312489701 is a prime.

It is a super-2 number, since 2×312620773² = 195463495422235058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312620743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156310386 + 156310387.

It is an arithmetic number, because the mean of its divisors is an integer number (156310387).

Almost surely, 2^312620773 is an apocalyptic number.

It is an amenable number.

312620773 is a deficient number, since it is larger than the sum of its proper divisors (1).

312620773 is an equidigital number, since it uses as much as digits as its factorization.

312620773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 312620773 is about 17681.0851759727. The cubic root of 312620773 is about 678.6918137849.

Adding to 312620773 its reverse (377026213), we get a palindrome (689646986).

The spelling of 312620773 in words is "three hundred twelve million, six hundred twenty thousand, seven hundred seventy-three".