31201203097 has 2 divisors, whose sum is σ = 31201203098. Its totient is φ = 31201203096.

The previous prime is 31201203071. The next prime is 31201203151. The reversal of 31201203097 is 79030210213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20898750096 + 10302453001 = 144564^2 + 101501^2 .

It is an emirp because it is prime and its reverse (79030210213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31201203097 - 2⁷ = 31201202969 is a prime.

It is not a weakly prime, because it can be changed into another prime (31201203197) 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, 15600601548 + 15600601549.

It is an arithmetic number, because the mean of its divisors is an integer number (15600601549).

Almost surely, 2^31201203097 is an apocalyptic number.

It is an amenable number.

31201203097 is a deficient number, since it is larger than the sum of its proper divisors (1).

31201203097 is an equidigital number, since it uses as much as digits as its factorization.

31201203097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The spelling of 31201203097 in words is "thirty-one billion, two hundred one million, two hundred three thousand, ninety-seven".