30313212977 has 2 divisors, whose sum is σ = 30313212978. Its totient is φ = 30313212976.

The previous prime is 30313212973. The next prime is 30313213027. The reversal of 30313212977 is 77921231303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28769587456 + 1543625521 = 169616^2 + 39289^2 .

It is a cyclic number.

It is not a de Polignac number, because 30313212977 - 2² = 30313212973 is a prime.

It is a super-2 number, since 2×30313212977² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30313212977.

It is not a weakly prime, because it can be changed into another prime (30313212971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15156606488 + 15156606489.

It is an arithmetic number, because the mean of its divisors is an integer number (15156606489).

Almost surely, 2^30313212977 is an apocalyptic number.

It is an amenable number.

30313212977 is a deficient number, since it is larger than the sum of its proper divisors (1).

30313212977 is an equidigital number, since it uses as much as digits as its factorization.

30313212977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 38.

The spelling of 30313212977 in words is "thirty billion, three hundred thirteen million, two hundred twelve thousand, nine hundred seventy-seven".