100953381 has 4 divisors (see below), whose sum is σ = 134604512. Its totient is φ = 67302252.

The previous prime is 100953367. The next prime is 100953383. The reversal of 100953381 is 183359001.

It is a happy number.

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.

It is not a de Polignac number, because 100953381 - 2⁷ = 100953253 is a prime.

It is a super-2 number, since 2×100953381² = 20383170270662322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100953383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16825561 + ... + 16825566.

It is an arithmetic number, because the mean of its divisors is an integer number (33651128).

Almost surely, 2^100953381 is an apocalyptic number.

It is an amenable number.

100953381 is a deficient number, since it is larger than the sum of its proper divisors (33651131).

100953381 is an equidigital number, since it uses as much as digits as its factorization.

100953381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33651130.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 100953381 is about 10047.5559714788. Note that the first 3 decimals coincide. The cubic root of 100953381 is about 465.6292878965.

The spelling of 100953381 in words is "one hundred million, nine hundred fifty-three thousand, three hundred eighty-one".