31200120227 has 2 divisors, whose sum is σ = 31200120228. Its totient is φ = 31200120226.

The previous prime is 31200120197. The next prime is 31200120233. The reversal of 31200120227 is 72202100213.

It is a strong prime.

It is an emirp because it is prime and its reverse (72202100213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31200120227 - 2³⁴ = 14020251043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31200120199 and 31200120208.

It is not a weakly prime, because it can be changed into another prime (31200120257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15600060113 + 15600060114.

It is an arithmetic number, because the mean of its divisors is an integer number (15600060114).

Almost surely, 2^31200120227 is an apocalyptic number.

31200120227 is a deficient number, since it is larger than the sum of its proper divisors (1).

31200120227 is an equidigital number, since it uses as much as digits as its factorization.

31200120227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The spelling of 31200120227 in words is "thirty-one billion, two hundred million, one hundred twenty thousand, two hundred twenty-seven".