2531451693 has 8 divisors (see below), whose sum is σ = 3377169088. Its totient is φ = 1686684384.

The previous prime is 2531451649. The next prime is 2531451707. The reversal of 2531451693 is 3961541352.

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

It is not a de Polignac number, because 2531451693 - 2⁸ = 2531451437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531451493) 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 7 ways as a sum of consecutive naturals, for example, 231280 + ... + 241977.

It is an arithmetic number, because the mean of its divisors is an integer number (422146136).

Almost surely, 2^2531451693 is an apocalyptic number.

It is an amenable number.

2531451693 is a deficient number, since it is larger than the sum of its proper divisors (845717395).

2531451693 is a wasteful number, since it uses less digits than its factorization.

2531451693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475043.

The product of its digits is 97200, while the sum is 39.

The square root of 2531451693 is about 50313.5338949671. The cubic root of 2531451693 is about 1362.8766412433.

The spelling of 2531451693 in words is "two billion, five hundred thirty-one million, four hundred fifty-one thousand, six hundred ninety-three".