2531433420 has 72 divisors (see below), whose sum is σ = 7721204400. Its totient is φ = 671310720.

The previous prime is 2531433367. The next prime is 2531433431. The reversal of 2531433420 is 243341352.

2531433420 is a `hidden beast` number, since 2 + 5 + 314 + 3 + 342 + 0 = 666.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 6270 + ... + 71429.

It is an arithmetic number, because the mean of its divisors is an integer number (107238950).

Almost surely, 2^2531433420 is an apocalyptic number.

2531433420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2531433420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3860602200).

2531433420 is an abundant number, since it is smaller than the sum of its proper divisors (5189770980).

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

2531433420 is a wasteful number, since it uses less digits than its factorization.

2531433420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77895 (or 77890 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 2531433420 is about 50313.3523033399. The cubic root of 2531433420 is about 1362.8733619781.

Adding to 2531433420 its reverse (243341352), we get a palindrome (2774774772).

The spelling of 2531433420 in words is "two billion, five hundred thirty-one million, four hundred thirty-three thousand, four hundred twenty".