69885131 has 2 divisors, whose sum is σ = 69885132. Its totient is φ = 69885130.

The previous prime is 69885103. The next prime is 69885133. The reversal of 69885131 is 13158896.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 69885131 - 2¹⁰ = 69884107 is a prime.

It is a super-2 number, since 2×69885131² = 9767863069774322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 69885133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (69885133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34942565 + 34942566.

It is an arithmetic number, because the mean of its divisors is an integer number (34942566).

Almost surely, 2^69885131 is an apocalyptic number.

69885131 is a deficient number, since it is larger than the sum of its proper divisors (1).

69885131 is an equidigital number, since it uses as much as digits as its factorization.

69885131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 41.

The square root of 69885131 is about 8359.7327110381. The cubic root of 69885131 is about 411.9029742145.

The spelling of 69885131 in words is "sixty-nine million, eight hundred eighty-five thousand, one hundred thirty-one".