2531323506 has 8 divisors (see below), whose sum is σ = 5062647024. Its totient is φ = 843774500.

The previous prime is 2531323481. The next prime is 2531323519. The reversal of 2531323506 is 6053231352.

It is a sphenic number, since it is the product of 3 distinct primes.

2531323506 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 210943620 + ... + 210943631.

It is an arithmetic number, because the mean of its divisors is an integer number (632830878).

Almost surely, 2^2531323506 is an apocalyptic number.

2531323506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2531323506 is a wasteful number, since it uses less digits than its factorization.

2531323506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421887256.

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 2531323506 is about 50312.2599969431. The cubic root of 2531323506 is about 1362.8536365227.

Adding to 2531323506 its reverse (6053231352), we get a palindrome (8584554858).

The spelling of 2531323506 in words is "two billion, five hundred thirty-one million, three hundred twenty-three thousand, five hundred six".