109251291 has 8 divisors (see below), whose sum is σ = 145849104. Its totient is φ = 72743840.

The previous prime is 109251281. The next prime is 109251313. The reversal of 109251291 is 192152901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 109251291 - 2¹¹ = 109249243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109251281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19716 + ... + 24641.

It is an arithmetic number, because the mean of its divisors is an integer number (18231138).

Almost surely, 2^109251291 is an apocalyptic number.

109251291 is a deficient number, since it is larger than the sum of its proper divisors (36597813).

109251291 is an equidigital number, since it uses as much as digits as its factorization.

109251291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45181.

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 109251291 is about 10452.3342369061. The cubic root of 109251291 is about 478.0524253465.

The spelling of 109251291 in words is "one hundred nine million, two hundred fifty-one thousand, two hundred ninety-one".