215130234091 has 2 divisors, whose sum is σ = 215130234092. Its totient is φ = 215130234090.

The previous prime is 215130234083. The next prime is 215130234181. The reversal of 215130234091 is 190432031512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 215130234091 - 2³ = 215130234083 is a prime.

It is not a weakly prime, because it can be changed into another prime (215130234031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107565117045 + 107565117046.

It is an arithmetic number, because the mean of its divisors is an integer number (107565117046).

Almost surely, 2^215130234091 is an apocalyptic number.

215130234091 is a deficient number, since it is larger than the sum of its proper divisors (1).

215130234091 is an equidigital number, since it uses as much as digits as its factorization.

215130234091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 215130234091 in words is "two hundred fifteen billion, one hundred thirty million, two hundred thirty-four thousand, ninety-one".