69319381 has 2 divisors, whose sum is σ = 69319382. Its totient is φ = 69319380.

The previous prime is 69319373. The next prime is 69319399. The reversal of 69319381 is 18391396.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64545156 + 4774225 = 8034^2 + 2185^2 .

It is a cyclic number.

It is not a de Polignac number, because 69319381 - 2³ = 69319373 is a prime.

It is a super-2 number, since 2×69319381² = 9610353164446322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69319301) 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, 34659690 + 34659691.

It is an arithmetic number, because the mean of its divisors is an integer number (34659691).

Almost surely, 2^69319381 is an apocalyptic number.

It is an amenable number.

69319381 is a deficient number, since it is larger than the sum of its proper divisors (1).

69319381 is an equidigital number, since it uses as much as digits as its factorization.

69319381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 40.

The square root of 69319381 is about 8325.8261451942. The cubic root of 69319381 is about 410.7884510690.

The spelling of 69319381 in words is "sixty-nine million, three hundred nineteen thousand, three hundred eighty-one".