7981203271 has 2 divisors, whose sum is σ = 7981203272. Its totient is φ = 7981203270.

The previous prime is 7981203247. The next prime is 7981203277. The reversal of 7981203271 is 1723021897.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7981203271 - 2¹⁷ = 7981072199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7981203277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3990601635 + 3990601636.

It is an arithmetic number, because the mean of its divisors is an integer number (3990601636).

Almost surely, 2^7981203271 is an apocalyptic number.

7981203271 is a deficient number, since it is larger than the sum of its proper divisors (1).

7981203271 is an equidigital number, since it uses as much as digits as its factorization.

7981203271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 7981203271 is about 89337.5803959342. The cubic root of 7981203271 is about 1998.4323775176.

The spelling of 7981203271 in words is "seven billion, nine hundred eighty-one million, two hundred three thousand, two hundred seventy-one".