101231123131 has 8 divisors (see below), whose sum is σ = 109996467200. Its totient is φ = 92809518120.

The previous prime is 101231123129. The next prime is 101231123143. The reversal of 101231123131 is 131321132101.

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

It is not a de Polignac number, because 101231123131 - 2¹ = 101231123129 is a prime.

It is a super-2 number, since 2×101231123131² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101231123099 and 101231123108.

It is not an unprimeable number, because it can be changed into a prime (101231123731) 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, 85934151 + ... + 85935328.

It is an arithmetic number, because the mean of its divisors is an integer number (13749558400).

Almost surely, 2^101231123131 is an apocalyptic number.

101231123131 is a deficient number, since it is larger than the sum of its proper divisors (8765344069).

101231123131 is a wasteful number, since it uses less digits than its factorization.

101231123131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171869529.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 101231123131 its reverse (131321132101), we get a palindrome (232552255232).

The spelling of 101231123131 in words is "one hundred one billion, two hundred thirty-one million, one hundred twenty-three thousand, one hundred thirty-one".