101234440423 has 4 divisors (see below), whose sum is σ = 101378855448. Its totient is φ = 101090025400.

The previous prime is 101234440403. The next prime is 101234440469. The reversal of 101234440423 is 324044432101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324044432101 = 13 ⋅24926494777.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101234440423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101234440391 and 101234440400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101234440403) 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, 72206461 + ... + 72207862.

It is an arithmetic number, because the mean of its divisors is an integer number (25344713862).

Almost surely, 2^101234440423 is an apocalyptic number.

101234440423 is a deficient number, since it is larger than the sum of its proper divisors (144415025).

101234440423 is an equidigital number, since it uses as much as digits as its factorization.

101234440423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144415024.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 101234440423 its reverse (324044432101), we get a palindrome (425278872524).

The spelling of 101234440423 in words is "one hundred one billion, two hundred thirty-four million, four hundred forty thousand, four hundred twenty-three".