2151315135323 has 4 divisors (see below), whose sum is σ = 2151318263160. Its totient is φ = 2151312007488.

The previous prime is 2151315135317. The next prime is 2151315135367. The reversal of 2151315135323 is 3235315131512.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2151315135323 - 2¹⁰ = 2151315134299 is a prime.

It is a super-4 number, since 4×2151315135323⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151315131323) 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, 32093 + ... + 2074526.

It is an arithmetic number, because the mean of its divisors is an integer number (537829565790).

Almost surely, 2^{2151315135323} is an apocalyptic number.

2151315135323 is a deficient number, since it is larger than the sum of its proper divisors (3127837).

2151315135323 is a wasteful number, since it uses less digits than its factorization.

2151315135323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3127836.

The product of its digits is 40500, while the sum is 35.

The spelling of 2151315135323 in words is "two trillion, one hundred fifty-one billion, three hundred fifteen million, one hundred thirty-five thousand, three hundred twenty-three".