6890214931 has 2 divisors, whose sum is σ = 6890214932. Its totient is φ = 6890214930.

The previous prime is 6890214911. The next prime is 6890214941. The reversal of 6890214931 is 1394120986.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6890214931 - 2³¹ = 4742731283 is a prime.

It is a super-2 number, since 2×6890214931² = 94950123590750669522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6890214901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3445107465 + 3445107466.

It is an arithmetic number, because the mean of its divisors is an integer number (3445107466).

Almost surely, 2^6890214931 is an apocalyptic number.

6890214931 is a deficient number, since it is larger than the sum of its proper divisors (1).

6890214931 is an equidigital number, since it uses as much as digits as its factorization.

6890214931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 6890214931 is about 83007.3185387891. The cubic root of 6890214931 is about 1902.8779037749.

The spelling of 6890214931 in words is "six billion, eight hundred ninety million, two hundred fourteen thousand, nine hundred thirty-one".