101123331031 has 4 divisors (see below), whose sum is σ = 101124121464. Its totient is φ = 101122540600.

The previous prime is 101123331013. The next prime is 101123331053. The reversal of 101123331031 is 130133321101.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 130133321101 = 7 ⋅18590474443.

It is a cyclic number.

It is not a de Polignac number, because 101123331031 - 2²¹ = 101121233879 is a prime.

It is a super-2 number, since 2×101123331031² (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 (101123331061) 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, 154405 + ... + 475486.

It is an arithmetic number, because the mean of its divisors is an integer number (25281030366).

Almost surely, 2^101123331031 is an apocalyptic number.

101123331031 is a deficient number, since it is larger than the sum of its proper divisors (790433).

101123331031 is an equidigital number, since it uses as much as digits as its factorization.

101123331031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790432.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 101123331031 its reverse (130133321101), we get a palindrome (231256652132).

The spelling of 101123331031 in words is "one hundred one billion, one hundred twenty-three million, three hundred thirty-one thousand, thirty-one".