2321161690 has 8 divisors (see below), whose sum is σ = 4178091060. Its totient is φ = 928464672.

The previous prime is 2321161669. The next prime is 2321161697. The reversal of 2321161690 is 961611232.

2321161690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2189210521 + 131951169 = 46789^2 + 11487^2 .

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

It is a super-2 number, since 2×2321161690² = 10775583182247312200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2321161697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116058075 + ... + 116058094.

Almost surely, 2^2321161690 is an apocalyptic number.

2321161690 is a deficient number, since it is larger than the sum of its proper divisors (1856929370).

2321161690 is a wasteful number, since it uses less digits than its factorization.

2321161690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232116176.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 2321161690 is about 48178.4359438951. The cubic root of 2321161690 is about 1324.0421110455.

The spelling of 2321161690 in words is "two billion, three hundred twenty-one million, one hundred sixty-one thousand, six hundred ninety".