13631203973 has 2 divisors, whose sum is σ = 13631203974. Its totient is φ = 13631203972.

The previous prime is 13631203969. The next prime is 13631203997. The reversal of 13631203973 is 37930213631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6887838049 + 6743365924 = 82993^2 + 82118^2 .

It is a cyclic number.

It is not a de Polignac number, because 13631203973 - 2² = 13631203969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13631203073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6815601986 + 6815601987.

It is an arithmetic number, because the mean of its divisors is an integer number (6815601987).

Almost surely, 2^13631203973 is an apocalyptic number.

It is an amenable number.

13631203973 is a deficient number, since it is larger than the sum of its proper divisors (1).

13631203973 is an equidigital number, since it uses as much as digits as its factorization.

13631203973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 38.

The spelling of 13631203973 in words is "thirteen billion, six hundred thirty-one million, two hundred three thousand, nine hundred seventy-three".