2520231523 has 4 divisors (see below), whose sum is σ = 2520628648. Its totient is φ = 2519834400.

The previous prime is 2520231517. The next prime is 2520231529. The reversal of 2520231523 is 3251320252.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2520231517) and next prime (2520231529).

It is a cyclic number.

It is not a de Polignac number, because 2520231523 - 2⁵ = 2520231491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2520231529) 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, 188886 + ... + 201787.

It is an arithmetic number, because the mean of its divisors is an integer number (630157162).

Almost surely, 2^2520231523 is an apocalyptic number.

2520231523 is a deficient number, since it is larger than the sum of its proper divisors (397125).

2520231523 is an equidigital number, since it uses as much as digits as its factorization.

2520231523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397124.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 2520231523 is about 50201.9075633586. The cubic root of 2520231523 is about 1360.8600966187.

Adding to 2520231523 its reverse (3251320252), we get a palindrome (5771551775).

The spelling of 2520231523 in words is "two billion, five hundred twenty million, two hundred thirty-one thousand, five hundred twenty-three".