2531988947 has 8 divisors (see below), whose sum is σ = 2572416000. Its totient is φ = 2491771464.

The previous prime is 2531988937. The next prime is 2531988961. The reversal of 2531988947 is 7498891352.

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 2531988947 - 2¹⁶ = 2531923411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2531988892 and 2531988901.

It is not an unprimeable number, because it can be changed into a prime (2531988937) 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, 27947 + ... + 76452.

It is an arithmetic number, because the mean of its divisors is an integer number (321552000).

Almost surely, 2^2531988947 is an apocalyptic number.

2531988947 is a deficient number, since it is larger than the sum of its proper divisors (40427053).

2531988947 is a wasteful number, since it uses less digits than its factorization.

2531988947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104785.

The product of its digits is 4354560, while the sum is 56.

The square root of 2531988947 is about 50318.8726721893. The cubic root of 2531988947 is about 1362.9730495790.

The spelling of 2531988947 in words is "two billion, five hundred thirty-one million, nine hundred eighty-eight thousand, nine hundred forty-seven".