30211312997 has 2 divisors, whose sum is σ = 30211312998. Its totient is φ = 30211312996.

The previous prime is 30211312993. The next prime is 30211313017. The reversal of 30211312997 is 79921311203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18592413316 + 11618899681 = 136354^2 + 107791^2 .

It is a cyclic number.

It is not a de Polignac number, because 30211312997 - 2² = 30211312993 is a prime.

It is a super-2 number, since 2×30211312997² (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 30211312997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30211312993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15105656498 + 15105656499.

It is an arithmetic number, because the mean of its divisors is an integer number (15105656499).

Almost surely, 2^30211312997 is an apocalyptic number.

It is an amenable number.

30211312997 is a deficient number, since it is larger than the sum of its proper divisors (1).

30211312997 is an equidigital number, since it uses as much as digits as its factorization.

30211312997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 38.

The spelling of 30211312997 in words is "thirty billion, two hundred eleven million, three hundred twelve thousand, nine hundred ninety-seven".