2531534220 has 36 divisors (see below), whose sum is σ = 7678987680. Its totient is φ = 675075744.

The previous prime is 2531534219. The next prime is 2531534251. The reversal of 2531534220 is 224351352.

It is a happy number.

2531534220 is a `hidden beast` number, since 2 + 5 + 315 + 342 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7031860 + ... + 7032219.

Almost surely, 2^2531534220 is an apocalyptic number.

2531534220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2531534220 is an abundant number, since it is smaller than the sum of its proper divisors (5147453460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2531534220 is a wasteful number, since it uses less digits than its factorization.

2531534220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14064094 (or 14064089 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 2531534220 is about 50314.3540155292. The cubic root of 2531534220 is about 1362.8914513091.

Adding to 2531534220 its reverse (224351352), we get a palindrome (2755885572).

The spelling of 2531534220 in words is "two billion, five hundred thirty-one million, five hundred thirty-four thousand, two hundred twenty".