2531043146 has 4 divisors (see below), whose sum is σ = 3796564722. Its totient is φ = 1265521572.

The previous prime is 2531043139. The next prime is 2531043173. The reversal of 2531043146 is 6413401352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2402470225 + 128572921 = 49015^2 + 11339^2 .

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 as a sum of consecutive naturals, namely, 632760785 + ... + 632760788.

Almost surely, 2^2531043146 is an apocalyptic number.

2531043146 is a deficient number, since it is larger than the sum of its proper divisors (1265521576).

2531043146 is a wasteful number, since it uses less digits than its factorization.

2531043146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265521575.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 2531043146 is about 50309.4737201653. The cubic root of 2531043146 is about 1362.8033197942.

Adding to 2531043146 its reverse (6413401352), we get a palindrome (8944444498).

The spelling of 2531043146 in words is "two billion, five hundred thirty-one million, forty-three thousand, one hundred forty-six".