2315134021 has 4 divisors (see below), whose sum is σ = 2436983200. Its totient is φ = 2193284844.

The previous prime is 2315133979. The next prime is 2315134043. The reversal of 2315134021 is 1204315132.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2315134021 - 2⁷ = 2315133893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2315133983 and 2315134001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2315132021) 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, 60924561 + ... + 60924598.

It is an arithmetic number, because the mean of its divisors is an integer number (609245800).

Almost surely, 2^2315134021 is an apocalyptic number.

It is an amenable number.

2315134021 is a deficient number, since it is larger than the sum of its proper divisors (121849179).

2315134021 is a wasteful number, since it uses less digits than its factorization.

2315134021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121849178.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2315134021 is about 48115.8396061006. The cubic root of 2315134021 is about 1322.8950121669.

Adding to 2315134021 its reverse (1204315132), we get a palindrome (3519449153).

The spelling of 2315134021 in words is "two billion, three hundred fifteen million, one hundred thirty-four thousand, twenty-one".