13021323971 has 2 divisors, whose sum is σ = 13021323972. Its totient is φ = 13021323970.

The previous prime is 13021323967. The next prime is 13021324007. The reversal of 13021323971 is 17932312031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13021323971 - 2² = 13021323967 is a prime.

It is not a weakly prime, because it can be changed into another prime (13021325971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6510661985 + 6510661986.

It is an arithmetic number, because the mean of its divisors is an integer number (6510661986).

Almost surely, 2^13021323971 is an apocalyptic number.

13021323971 is a deficient number, since it is larger than the sum of its proper divisors (1).

13021323971 is an equidigital number, since it uses as much as digits as its factorization.

13021323971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 32.

The spelling of 13021323971 in words is "thirteen billion, twenty-one million, three hundred twenty-three thousand, nine hundred seventy-one".