101440023 has 8 divisors (see below), whose sum is σ = 135303168. Its totient is φ = 67601784.

The previous prime is 101440021. The next prime is 101440049. The reversal of 101440023 is 320044101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101440023 - 2¹ = 101440021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101439984 and 101440011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101440021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7786 + ... + 16232.

It is an arithmetic number, because the mean of its divisors is an integer number (16912896).

Almost surely, 2^101440023 is an apocalyptic number.

101440023 is a deficient number, since it is larger than the sum of its proper divisors (33863145).

101440023 is an equidigital number, since it uses as much as digits as its factorization.

101440023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12453.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 101440023 is about 10071.7437914196. The cubic root of 101440023 is about 466.3762717697.

Adding to 101440023 its reverse (320044101), we get a palindrome (421484124).

The spelling of 101440023 in words is "one hundred one million, four hundred forty thousand, twenty-three".