6801328531 has 4 divisors (see below), whose sum is σ = 6813762952. Its totient is φ = 6788894112.

The previous prime is 6801328517. The next prime is 6801328543. The reversal of 6801328531 is 1358231086.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6801328531 is a prime.

It is a super-2 number, since 2×6801328531² = 92516139573189235922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6801328031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6216390 + ... + 6217483.

It is an arithmetic number, because the mean of its divisors is an integer number (1703440738).

Almost surely, 2^6801328531 is an apocalyptic number.

6801328531 is a deficient number, since it is larger than the sum of its proper divisors (12434421).

6801328531 is a wasteful number, since it uses less digits than its factorization.

6801328531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12434420.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 6801328531 is about 82470.1675213528. The cubic root of 6801328531 is about 1894.6598462611.

The spelling of 6801328531 in words is "six billion, eight hundred one million, three hundred twenty-eight thousand, five hundred thirty-one".