13012911971 has 2 divisors, whose sum is σ = 13012911972. Its totient is φ = 13012911970.

The previous prime is 13012911959. The next prime is 13012911991. The reversal of 13012911971 is 17911921031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13012911971 - 2¹⁰ = 13012910947 is a prime.

It is not a weakly prime, because it can be changed into another prime (13012911991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6506455985 + 6506455986.

It is an arithmetic number, because the mean of its divisors is an integer number (6506455986).

Almost surely, 2^13012911971 is an apocalyptic number.

13012911971 is a deficient number, since it is larger than the sum of its proper divisors (1).

13012911971 is an equidigital number, since it uses as much as digits as its factorization.

13012911971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 35.

The spelling of 13012911971 in words is "thirteen billion, twelve million, nine hundred eleven thousand, nine hundred seventy-one".