2520213531 has 24 divisors (see below), whose sum is σ = 3779455680. Its totient is φ = 1491871920.

The previous prime is 2520213499. The next prime is 2520213557. The reversal of 2520213531 is 1353120252.

It is a happy number.

2520213531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2520213531 - 2⁵ = 2520213499 is a prime.

It is a super-2 number, since 2×2520213531² = 12702952483670975922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2520213571) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65121 + ... + 96338.

It is an arithmetic number, because the mean of its divisors is an integer number (157477320).

Almost surely, 2^2520213531 is an apocalyptic number.

2520213531 is a deficient number, since it is larger than the sum of its proper divisors (1259242149).

2520213531 is a wasteful number, since it uses less digits than its factorization.

2520213531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161527 (or 161516 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 2520213531 is about 50201.7283666608. The cubic root of 2520213531 is about 1360.8568582055.

Adding to 2520213531 its reverse (1353120252), we get a palindrome (3873333783).

It can be divided in two parts, 252021 and 3531, that added together give a palindrome (255552).

The spelling of 2520213531 in words is "two billion, five hundred twenty million, two hundred thirteen thousand, five hundred thirty-one".