123151091 has 8 divisors (see below), whose sum is σ = 140834304. Its totient is φ = 105490440.

The previous prime is 123151069. The next prime is 123151109. The reversal of 123151091 is 190151321.

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 123151091 - 2¹⁴ = 123134707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123151291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8396 + ... + 17798.

It is an arithmetic number, because the mean of its divisors is an integer number (17604288).

Almost surely, 2^123151091 is an apocalyptic number.

123151091 is a deficient number, since it is larger than the sum of its proper divisors (17683213).

123151091 is an equidigital number, since it uses as much as digits as its factorization.

123151091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11281.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 123151091 is about 11097.3461241866. The cubic root of 123151091 is about 497.5225325855.

The spelling of 123151091 in words is "one hundred twenty-three million, one hundred fifty-one thousand, ninety-one".