50031013 has 2 divisors, whose sum is σ = 50031014. Its totient is φ = 50031012.

The previous prime is 50031011. The next prime is 50031031. The reversal of 50031013 is 31013005.

Together with next prime (50031031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26040609 + 23990404 = 5103^2 + 4898^2 .

It is a cyclic number.

It is not a de Polignac number, because 50031013 - 2¹ = 50031011 is a prime.

Together with 50031011, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 50030984 and 50031002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50031011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25015506 + 25015507.

It is an arithmetic number, because the mean of its divisors is an integer number (25015507).

Almost surely, 2^50031013 is an apocalyptic number.

It is an amenable number.

50031013 is a deficient number, since it is larger than the sum of its proper divisors (1).

50031013 is an equidigital number, since it uses as much as digits as its factorization.

50031013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45, while the sum is 13.

The square root of 50031013 is about 7073.2604221816. The cubic root of 50031013 is about 368.4793027006.

Adding to 50031013 its reverse (31013005), we get a palindrome (81044018).

It can be divided in two parts, 500 and 31013, that added together give a palindrome (31513).

The spelling of 50031013 in words is "fifty million, thirty-one thousand, thirteen".