5312121887 has 2 divisors, whose sum is σ = 5312121888. Its totient is φ = 5312121886.

The previous prime is 5312121877. The next prime is 5312122043. The reversal of 5312121887 is 7881212135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5312121887 - 2¹² = 5312117791 is a prime.

It is a super-3 number, since 3×5312121887³ (a number of 30 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5312121887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5312121877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2656060943 + 2656060944.

It is an arithmetic number, because the mean of its divisors is an integer number (2656060944).

Almost surely, 2^5312121887 is an apocalyptic number.

5312121887 is a deficient number, since it is larger than the sum of its proper divisors (1).

5312121887 is an equidigital number, since it uses as much as digits as its factorization.

5312121887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 38.

The square root of 5312121887 is about 72884.3048056301. The cubic root of 5312121887 is about 1744.8416138541.

The spelling of 5312121887 in words is "five billion, three hundred twelve million, one hundred twenty-one thousand, eight hundred eighty-seven".