31631130001 has 2 divisors, whose sum is σ = 31631130002. Its totient is φ = 31631130000.

The previous prime is 31631129963. The next prime is 31631130017. The reversal of 31631130001 is 10003113613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23851713600 + 7779416401 = 154440^2 + 88201^2 .

It is an emirp because it is prime and its reverse (10003113613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31631130001 - 2⁹ = 31631129489 is a prime.

It is not a weakly prime, because it can be changed into another prime (31631130031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15815565000 + 15815565001.

It is an arithmetic number, because the mean of its divisors is an integer number (15815565001).

Almost surely, 2^31631130001 is an apocalyptic number.

It is an amenable number.

31631130001 is a deficient number, since it is larger than the sum of its proper divisors (1).

31631130001 is an equidigital number, since it uses as much as digits as its factorization.

31631130001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 31631130001 its reverse (10003113613), we get a palindrome (41634243614).

The spelling of 31631130001 in words is "thirty-one billion, six hundred thirty-one million, one hundred thirty thousand, one".