2531404243 has 8 divisors (see below), whose sum is σ = 2545603200. Its totient is φ = 2517233088.

The previous prime is 2531404237. The next prime is 2531404273. The reversal of 2531404243 is 3424041352.

It is a happy number.

2531404243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2531404243 - 2⁹ = 2531403731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2531404223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191223 + ... + 204031.

It is an arithmetic number, because the mean of its divisors is an integer number (318200400).

Almost surely, 2^2531404243 is an apocalyptic number.

2531404243 is a deficient number, since it is larger than the sum of its proper divisors (14198957).

2531404243 is a wasteful number, since it uses less digits than its factorization.

2531404243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13901.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 2531404243 is about 50313.0623496523. The cubic root of 2531404243 is about 1362.8681258526.

Adding to 2531404243 its reverse (3424041352), we get a palindrome (5955445595).

The spelling of 2531404243 in words is "two billion, five hundred thirty-one million, four hundred four thousand, two hundred forty-three".