101318381 has 4 divisors (see below), whose sum is σ = 105723552. Its totient is φ = 96913212.

The previous prime is 101318359. The next prime is 101318387. The reversal of 101318381 is 183813101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 183813101 = 353 ⋅520717.

It is a cyclic number.

It is not a de Polignac number, because 101318381 - 2¹⁸ = 101056237 is a prime.

It is a super-2 number, since 2×101318381² = 20530828656922322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101318381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101318387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2202551 + ... + 2202596.

It is an arithmetic number, because the mean of its divisors is an integer number (26430888).

Almost surely, 2^101318381 is an apocalyptic number.

It is an amenable number.

101318381 is a deficient number, since it is larger than the sum of its proper divisors (4405171).

101318381 is an equidigital number, since it uses as much as digits as its factorization.

101318381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4405170.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 101318381 is about 10065.7032044463. The cubic root of 101318381 is about 466.1897785355.

The spelling of 101318381 in words is "one hundred one million, three hundred eighteen thousand, three hundred eighty-one".