2521323111 has 8 divisors (see below), whose sum is σ = 3369751024. Its totient is φ = 1676888640.

The previous prime is 2521323109. The next prime is 2521323113. The reversal of 2521323111 is 1113231252.

It is an interprime number because it is at equal distance from previous prime (2521323109) and next prime (2521323113).

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

It is not a de Polignac number, because 2521323111 - 2¹ = 2521323109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521323113) 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, 996886 + ... + 999411.

It is an arithmetic number, because the mean of its divisors is an integer number (421218878).

Almost surely, 2^2521323111 is an apocalyptic number.

2521323111 is a deficient number, since it is larger than the sum of its proper divisors (848427913).

2521323111 is a wasteful number, since it uses less digits than its factorization.

2521323111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996721.

The product of its digits is 360, while the sum is 21.

The square root of 2521323111 is about 50212.7783636795. The cubic root of 2521323111 is about 1361.0565447251.

Adding to 2521323111 its reverse (1113231252), we get a palindrome (3634554363).

The spelling of 2521323111 in words is "two billion, five hundred twenty-one million, three hundred twenty-three thousand, one hundred eleven".