50312131 has 2 divisors, whose sum is σ = 50312132. Its totient is φ = 50312130.

The previous prime is 50312113. The next prime is 50312147. The reversal of 50312131 is 13121305.

Together with previous prime (50312113) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (50312147) can be obtained adding 50312131 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 50312131 - 2⁵ = 50312099 is a prime.

It is a super-2 number, since 2×50312131² = 5062621051522322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50312161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25156065 + 25156066.

It is an arithmetic number, because the mean of its divisors is an integer number (25156066).

Almost surely, 2^50312131 is an apocalyptic number.

50312131 is a deficient number, since it is larger than the sum of its proper divisors (1).

50312131 is an equidigital number, since it uses as much as digits as its factorization.

50312131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 50312131 is about 7093.1044684257. The cubic root of 50312131 is about 369.1681604658.

Adding to 50312131 its reverse (13121305), we get a palindrome (63433436).

The spelling of 50312131 in words is "fifty million, three hundred twelve thousand, one hundred thirty-one".