101123421031 has 4 divisors (see below), whose sum is σ = 101128237200. Its totient is φ = 101118604864.

The previous prime is 101123421029. The next prime is 101123421041. The reversal of 101123421031 is 130124321101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101123421031 - 2¹ = 101123421029 is a prime.

It is a super-2 number, since 2×101123421031² (a number of 23 digits) 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 (101123421001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2376451 + ... + 2418628.

It is an arithmetic number, because the mean of its divisors is an integer number (25282059300).

Almost surely, 2^101123421031 is an apocalyptic number.

101123421031 is a deficient number, since it is larger than the sum of its proper divisors (4816169).

101123421031 is an equidigital number, since it uses as much as digits as its factorization.

101123421031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4816168.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 101123421031 its reverse (130124321101), we get a palindrome (231247742132).

The spelling of 101123421031 in words is "one hundred one billion, one hundred twenty-three million, four hundred twenty-one thousand, thirty-one".