13031211011971 has 2 divisors, whose sum is σ = 13031211011972. Its totient is φ = 13031211011970.

The previous prime is 13031211011963. The next prime is 13031211012137. The reversal of 13031211011971 is 17911011213031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13031211011971 - 2³ = 13031211011963 is a prime.

It is not a weakly prime, because it can be changed into another prime (13031211011471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6515605505985 + 6515605505986.

It is an arithmetic number, because the mean of its divisors is an integer number (6515605505986).

Almost surely, 2^{13031211011971} is an apocalyptic number.

13031211011971 is a deficient number, since it is larger than the sum of its proper divisors (1).

13031211011971 is an equidigital number, since it uses as much as digits as its factorization.

13031211011971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 31.

The spelling of 13031211011971 in words is "thirteen trillion, thirty-one billion, two hundred eleven million, eleven thousand, nine hundred seventy-one".