6881294531 has 2 divisors, whose sum is σ = 6881294532. Its totient is φ = 6881294530.

The previous prime is 6881294503. The next prime is 6881294593. The reversal of 6881294531 is 1354921886.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6881294531 is a prime.

It is a super-2 number, since 2×6881294531² = 94704428844741019922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6881291531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3440647265 + 3440647266.

It is an arithmetic number, because the mean of its divisors is an integer number (3440647266).

Almost surely, 2^6881294531 is an apocalyptic number.

6881294531 is a deficient number, since it is larger than the sum of its proper divisors (1).

6881294531 is an equidigital number, since it uses as much as digits as its factorization.

6881294531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 47.

The square root of 6881294531 is about 82953.5685248079. The cubic root of 6881294531 is about 1902.0563637215.

The spelling of 6881294531 in words is "six billion, eight hundred eighty-one million, two hundred ninety-four thousand, five hundred thirty-one".