6731001881 has 2 divisors, whose sum is σ = 6731001882. Its totient is φ = 6731001880.

The previous prime is 6731001799. The next prime is 6731001943. The reversal of 6731001881 is 1881001376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6575750281 + 155251600 = 81091^2 + 12460^2 .

It is a cyclic number.

It is not a de Polignac number, because 6731001881 - 2¹⁸ = 6730739737 is a prime.

It is a super-2 number, since 2×6731001881² = 90612772644051076322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6731001481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3365500940 + 3365500941.

It is an arithmetic number, because the mean of its divisors is an integer number (3365500941).

Almost surely, 2^6731001881 is an apocalyptic number.

It is an amenable number.

6731001881 is a deficient number, since it is larger than the sum of its proper divisors (1).

6731001881 is an equidigital number, since it uses as much as digits as its factorization.

6731001881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 6731001881 is about 82042.6832874206. The cubic root of 6731001881 is about 1888.1068621324.

The spelling of 6731001881 in words is "six billion, seven hundred thirty-one million, one thousand, eight hundred eighty-one".