2102661323 has 4 divisors (see below), whose sum is σ = 2403041520. Its totient is φ = 1802281128.

The previous prime is 2102661313. The next prime is 2102661331. The reversal of 2102661323 is 3231662012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2102661323 - 2¹⁸ = 2102399179 is a prime.

It is a super-2 number, since 2×2102661323² = 8842369278480220658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102661292 and 2102661301.

It is not an unprimeable number, because it can be changed into a prime (2102661313) 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, 150190088 + ... + 150190101.

It is an arithmetic number, because the mean of its divisors is an integer number (600760380).

Almost surely, 2^2102661323 is an apocalyptic number.

2102661323 is a deficient number, since it is larger than the sum of its proper divisors (300380197).

2102661323 is an equidigital number, since it uses as much as digits as its factorization.

2102661323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300380196.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 2102661323 is about 45854.7851701434. The cubic root of 2102661323 is about 1281.1198945326.

The spelling of 2102661323 in words is "two billion, one hundred two million, six hundred sixty-one thousand, three hundred twenty-three".