120321691 has 8 divisors (see below), whose sum is σ = 137755904. Its totient is φ = 102948840.

The previous prime is 120321689. The next prime is 120321701. The reversal of 120321691 is 196123021.

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 120321691 - 2¹ = 120321689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120321601) 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, 11055 + ... + 19048.

It is an arithmetic number, because the mean of its divisors is an integer number (17219488).

Almost surely, 2^120321691 is an apocalyptic number.

120321691 is a deficient number, since it is larger than the sum of its proper divisors (17434213).

120321691 is an equidigital number, since it uses as much as digits as its factorization.

120321691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30681.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 120321691 is about 10969.1244409023. The cubic root of 120321691 is about 493.6827761708.

The spelling of 120321691 in words is "one hundred twenty million, three hundred twenty-one thousand, six hundred ninety-one".