6481280031 has 4 divisors (see below), whose sum is σ = 8641706712. Its totient is φ = 4320853352.

The previous prime is 6481280023. The next prime is 6481280051. The reversal of 6481280031 is 1300821846.

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

It is a cyclic number.

It is not a de Polignac number, because 6481280031 - 2³ = 6481280023 is a prime.

It is a super-2 number, since 2×6481280031² = 84013981680478721922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6481279974 and 6481280001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6481280051) 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, 1080213336 + ... + 1080213341.

It is an arithmetic number, because the mean of its divisors is an integer number (2160426678).

Almost surely, 2^6481280031 is an apocalyptic number.

6481280031 is a deficient number, since it is larger than the sum of its proper divisors (2160426681).

6481280031 is a wasteful number, since it uses less digits than its factorization.

6481280031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160426680.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 6481280031 is about 80506.3974538670. The cubic root of 6481280031 is about 1864.4622533276.

The spelling of 6481280031 in words is "six billion, four hundred eighty-one million, two hundred eighty thousand, thirty-one".