5131321641 has 12 divisors (see below), whose sum is σ = 7415878080. Its totient is φ = 3419049240.

The previous prime is 5131321603. The next prime is 5131321649. The reversal of 5131321641 is 1461231315.

It is a happy number.

5131321641 is a `hidden beast` number, since 5 + 1 + 3 + 13 + 2 + 1 + 641 = 666.

It is not a de Polignac number, because 5131321641 - 2³⁰ = 4057579817 is a prime.

It is a super-3 number, since 3×5131321641³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (5131321649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134805 + ... + 168626.

It is an arithmetic number, because the mean of its divisors is an integer number (617989840).

Almost surely, 2^5131321641 is an apocalyptic number.

It is an amenable number.

5131321641 is a deficient number, since it is larger than the sum of its proper divisors (2284556439).

5131321641 is a wasteful number, since it uses less digits than its factorization.

5131321641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305316 (or 305313 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 5131321641 is about 71633.2439653545. The cubic root of 5131321641 is about 1724.8172197008.

Adding to 5131321641 its reverse (1461231315), we get a palindrome (6592552956).

The spelling of 5131321641 in words is "five billion, one hundred thirty-one million, three hundred twenty-one thousand, six hundred forty-one".