30331612477 has 2 divisors, whose sum is σ = 30331612478. Its totient is φ = 30331612476.

The previous prime is 30331612463. The next prime is 30331612499. The reversal of 30331612477 is 77421613303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21536736516 + 8794875961 = 146754^2 + 93781^2 .

It is an emirp because it is prime and its reverse (77421613303) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30331612477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30331612777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15165806238 + 15165806239.

It is an arithmetic number, because the mean of its divisors is an integer number (15165806239).

Almost surely, 2^30331612477 is an apocalyptic number.

It is an amenable number.

30331612477 is a deficient number, since it is larger than the sum of its proper divisors (1).

30331612477 is an equidigital number, since it uses as much as digits as its factorization.

30331612477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 37.

The spelling of 30331612477 in words is "thirty billion, three hundred thirty-one million, six hundred twelve thousand, four hundred seventy-seven".