5130031421 has 2 divisors, whose sum is σ = 5130031422. Its totient is φ = 5130031420.

The previous prime is 5130031321. The next prime is 5130031477. The reversal of 5130031421 is 1241300315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4824830521 + 305200900 = 69461^2 + 17470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5130031421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5130031393 and 5130031402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5130031321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2565015710 + 2565015711.

It is an arithmetic number, because the mean of its divisors is an integer number (2565015711).

Almost surely, 2^5130031421 is an apocalyptic number.

It is an amenable number.

5130031421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5130031421 is an equidigital number, since it uses as much as digits as its factorization.

5130031421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 5130031421 is about 71624.2376643549. The cubic root of 5130031421 is about 1724.6726448477.

Adding to 5130031421 its reverse (1241300315), we get a palindrome (6371331736).

The spelling of 5130031421 in words is "five billion, one hundred thirty million, thirty-one thousand, four hundred twenty-one".