101040181 has 4 divisors (see below), whose sum is σ = 110225664. Its totient is φ = 91854700.

The previous prime is 101040179. The next prime is 101040209. The reversal of 101040181 is 181040101.

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: 181040101 = 11 ⋅16458191.

It is a cyclic number.

It is not a de Polignac number, because 101040181 - 2¹ = 101040179 is a prime.

It is a super-2 number, since 2×101040181² = 20418236353025522, 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 (101040151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4592725 + ... + 4592746.

It is an arithmetic number, because the mean of its divisors is an integer number (27556416).

Almost surely, 2^101040181 is an apocalyptic number.

101040181 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

101040181 is a deficient number, since it is larger than the sum of its proper divisors (9185483).

101040181 is an equidigital number, since it uses as much as digits as its factorization.

101040181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9185482.

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 101040181 is about 10051.8745018031. The cubic root of 101040181 is about 465.7626994569.

Adding to 101040181 its reverse (181040101), we get a palindrome (282080282).

The spelling of 101040181 in words is "one hundred one million, forty thousand, one hundred eighty-one".