2115523141 has 4 divisors (see below), whose sum is σ = 2207502432. Its totient is φ = 2023543852.

The previous prime is 2115523133. The next prime is 2115523169. The reversal of 2115523141 is 1413255112.

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 2115523141 - 2³ = 2115523133 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 (2115523841) 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, 45989611 + ... + 45989656.

It is an arithmetic number, because the mean of its divisors is an integer number (551875608).

Almost surely, 2^2115523141 is an apocalyptic number.

It is an amenable number.

2115523141 is a deficient number, since it is larger than the sum of its proper divisors (91979291).

2115523141 is an equidigital number, since it uses as much as digits as its factorization.

2115523141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91979290.

The product of its digits is 1200, while the sum is 25.

The square root of 2115523141 is about 45994.8164579445. The cubic root of 2115523141 is about 1283.7267571128.

Adding to 2115523141 its reverse (1413255112), we get a palindrome (3528778253).

The spelling of 2115523141 in words is "two billion, one hundred fifteen million, five hundred twenty-three thousand, one hundred forty-one".