5281381931 has 16 divisors (see below), whose sum is σ = 6125506560. Its totient is φ = 4459764960.

The previous prime is 5281381871. The next prime is 5281381957. The reversal of 5281381931 is 1391831825.

It is a de Polignac number, because none of the positive numbers 2^k-5281381931 is a prime.

It is a super-2 number, since 2×5281381931² = 55785990202186577522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5281381981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 826310 + ... + 832676.

It is an arithmetic number, because the mean of its divisors is an integer number (382844160).

Almost surely, 2^5281381931 is an apocalyptic number.

5281381931 is a deficient number, since it is larger than the sum of its proper divisors (844124629).

5281381931 is a wasteful number, since it uses less digits than its factorization.

5281381931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8114.

The product of its digits is 51840, while the sum is 41.

The square root of 5281381931 is about 72673.1169759492. The cubic root of 5281381931 is about 1741.4694429555.

The spelling of 5281381931 in words is "five billion, two hundred eighty-one million, three hundred eighty-one thousand, nine hundred thirty-one".