2531005420 has 12 divisors (see below), whose sum is σ = 5315111424. Its totient is φ = 1012402160.

The previous prime is 2531005417. The next prime is 2531005429. The reversal of 2531005420 is 245001352.

It is a junction number, because it is equal to n+sod(n) for n = 2531005391 and 2531005400.

It is not an unprimeable number, because it can be changed into a prime (2531005429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63275116 + ... + 63275155.

It is an arithmetic number, because the mean of its divisors is an integer number (442925952).

Almost surely, 2^2531005420 is an apocalyptic number.

2531005420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2531005420 is an abundant number, since it is smaller than the sum of its proper divisors (2784106004).

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

2531005420 is a wasteful number, since it uses less digits than its factorization.

2531005420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126550280 (or 126550278 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 2531005420 is about 50309.0987794455. The cubic root of 2531005420 is about 1362.7965487555.

Adding to 2531005420 its reverse (245001352), we get a palindrome (2776006772).

The spelling of 2531005420 in words is "two billion, five hundred thirty-one million, five thousand, four hundred twenty".