30302131997 has 2 divisors, whose sum is σ = 30302131998. Its totient is φ = 30302131996.

The previous prime is 30302131973. The next prime is 30302132099. The reversal of 30302131997 is 79913120303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17007811396 + 13294320601 = 130414^2 + 115301^2 .

It is an emirp because it is prime and its reverse (79913120303) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30302131997 - 2¹⁰ = 30302130973 is a prime.

It is a super-2 number, since 2×30302131997² (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 30302131997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30302131597) 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, 15151065998 + 15151065999.

It is an arithmetic number, because the mean of its divisors is an integer number (15151065999).

Almost surely, 2^30302131997 is an apocalyptic number.

It is an amenable number.

30302131997 is a deficient number, since it is larger than the sum of its proper divisors (1).

30302131997 is an equidigital number, since it uses as much as digits as its factorization.

30302131997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 38.

The spelling of 30302131997 in words is "thirty billion, three hundred two million, one hundred thirty-one thousand, nine hundred ninety-seven".