31194474401 has 2 divisors, whose sum is σ = 31194474402. Its totient is φ = 31194474400.

The previous prime is 31194474383. The next prime is 31194474407. The reversal of 31194474401 is 10447449113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28947619600 + 2246854801 = 170140^2 + 47401^2 .

It is a cyclic number.

It is not a de Polignac number, because 31194474401 - 2¹⁰ = 31194473377 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (31194474407) 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, 15597237200 + 15597237201.

It is an arithmetic number, because the mean of its divisors is an integer number (15597237201).

Almost surely, 2^31194474401 is an apocalyptic number.

It is an amenable number.

31194474401 is a deficient number, since it is larger than the sum of its proper divisors (1).

31194474401 is an equidigital number, since it uses as much as digits as its factorization.

31194474401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 31194474401 in words is "thirty-one billion, one hundred ninety-four million, four hundred seventy-four thousand, four hundred one".