2531004145 has 32 divisors (see below), whose sum is σ = 3265920000. Its totient is φ = 1878723840.

The previous prime is 2531004143. The next prime is 2531004181. The reversal of 2531004145 is 5414001352.

It is a happy number.

It is not a de Polignac number, because 2531004145 - 2¹ = 2531004143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2531004143) 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 31 ways as a sum of consecutive naturals, for example, 667866 + ... + 671644.

It is an arithmetic number, because the mean of its divisors is an integer number (102060000).

Almost surely, 2^2531004145 is an apocalyptic number.

It is an amenable number.

2531004145 is a deficient number, since it is larger than the sum of its proper divisors (734915855).

2531004145 is a wasteful number, since it uses less digits than its factorization.

2531004145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3993.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2531004145 is about 50309.0861077798. The cubic root of 2531004145 is about 1362.7963199181.

Adding to 2531004145 its reverse (5414001352), we get a palindrome (7945005497).

The spelling of 2531004145 in words is "two billion, five hundred thirty-one million, four thousand, one hundred forty-five".