88319381 has 2 divisors, whose sum is σ = 88319382. Its totient is φ = 88319380.

The previous prime is 88319351. The next prime is 88319419. The reversal of 88319381 is 18391388.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75603025 + 12716356 = 8695^2 + 3566^2 .

It is a cyclic number.

It is not a de Polignac number, because 88319381 - 2²² = 84125077 is a prime.

It is a super-2 number, since 2×88319381² = 15600626120446322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88319311) 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, 44159690 + 44159691.

It is an arithmetic number, because the mean of its divisors is an integer number (44159691).

Almost surely, 2^88319381 is an apocalyptic number.

It is an amenable number.

88319381 is a deficient number, since it is larger than the sum of its proper divisors (1).

88319381 is an equidigital number, since it uses as much as digits as its factorization.

88319381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 41.

The square root of 88319381 is about 9397.8391665318. The cubic root of 88319381 is about 445.3334722147. Note that the first 3 decimals are identical.

The spelling of 88319381 in words is "eighty-eight million, three hundred nineteen thousand, three hundred eighty-one".