6900531091 has 2 divisors, whose sum is σ = 6900531092. Its totient is φ = 6900531090.

The previous prime is 6900531083. The next prime is 6900531101. The reversal of 6900531091 is 1901350096.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6900531091 - 2³ = 6900531083 is a prime.

It is not a weakly prime, because it can be changed into another prime (6900541091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3450265545 + 3450265546.

It is an arithmetic number, because the mean of its divisors is an integer number (3450265546).

Almost surely, 2^6900531091 is an apocalyptic number.

6900531091 is a deficient number, since it is larger than the sum of its proper divisors (1).

6900531091 is an equidigital number, since it uses as much as digits as its factorization.

6900531091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 6900531091 is about 83069.4353598241. The cubic root of 6900531091 is about 1903.8271051305.

The spelling of 6900531091 in words is "six billion, nine hundred million, five hundred thirty-one thousand, ninety-one".