109431051971 has 2 divisors, whose sum is σ = 109431051972. Its totient is φ = 109431051970.

The previous prime is 109431051959. The next prime is 109431052051. The reversal of 109431051971 is 179150134901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109431051971 - 2¹⁰ = 109431050947 is a prime.

It is not a weakly prime, because it can be changed into another prime (109431051901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54715525985 + 54715525986.

It is an arithmetic number, because the mean of its divisors is an integer number (54715525986).

Almost surely, 2^109431051971 is an apocalyptic number.

109431051971 is a deficient number, since it is larger than the sum of its proper divisors (1).

109431051971 is an equidigital number, since it uses as much as digits as its factorization.

109431051971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 41.

The spelling of 109431051971 in words is "one hundred nine billion, four hundred thirty-one million, fifty-one thousand, nine hundred seventy-one".