2131405323 has 8 divisors (see below), whose sum is σ = 2870011536. Its totient is φ = 1406868000.

The previous prime is 2131405319. The next prime is 2131405337. The reversal of 2131405323 is 3235041312.

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

It is not a de Polignac number, because 2131405323 - 2² = 2131405319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2131405293 and 2131405302.

It is not an unprimeable number, because it can be changed into a prime (2131405723) 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, 3516868 + ... + 3517473.

It is an arithmetic number, because the mean of its divisors is an integer number (358751442).

Almost surely, 2^2131405323 is an apocalyptic number.

2131405323 is a deficient number, since it is larger than the sum of its proper divisors (738606213).

2131405323 is a wasteful number, since it uses less digits than its factorization.

2131405323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7034445.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 2131405323 is about 46167.1454933051. The cubic root of 2131405323 is about 1286.9312556067.

Adding to 2131405323 its reverse (3235041312), we get a palindrome (5366446635).

The spelling of 2131405323 in words is "two billion, one hundred thirty-one million, four hundred five thousand, three hundred twenty-three".