30432120197 has 2 divisors, whose sum is σ = 30432120198. Its totient is φ = 30432120196.

The previous prime is 30432120179. The next prime is 30432120209. The reversal of 30432120197 is 79102123403.

Together with previous prime (30432120179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18726827716 + 11705292481 = 136846^2 + 108191^2 .

It is a cyclic number.

It is not a de Polignac number, because 30432120197 - 2⁸ = 30432119941 is a prime.

It is a super-2 number, since 2×30432120197² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30432120107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15216060098 + 15216060099.

It is an arithmetic number, because the mean of its divisors is an integer number (15216060099).

Almost surely, 2^30432120197 is an apocalyptic number.

It is an amenable number.

30432120197 is a deficient number, since it is larger than the sum of its proper divisors (1).

30432120197 is an equidigital number, since it uses as much as digits as its factorization.

30432120197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The spelling of 30432120197 in words is "thirty billion, four hundred thirty-two million, one hundred twenty thousand, one hundred ninety-seven".