101123131243 has 8 divisors (see below), whose sum is σ = 102875572800. Its totient is φ = 99371972808.

The previous prime is 101123131183. The next prime is 101123131247. The reversal of 101123131243 is 342131321101.

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

It is a cyclic number.

It is not a de Polignac number, because 101123131243 - 2²⁵ = 101089576811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101123131247) 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, 161113 + ... + 477706.

It is an arithmetic number, because the mean of its divisors is an integer number (12859446600).

Almost surely, 2^101123131243 is an apocalyptic number.

101123131243 is a deficient number, since it is larger than the sum of its proper divisors (1752441557).

101123131243 is an equidigital number, since it uses as much as digits as its factorization.

101123131243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641561.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 101123131243 its reverse (342131321101), we get a palindrome (443254452344).

The spelling of 101123131243 in words is "one hundred one billion, one hundred twenty-three million, one hundred thirty-one thousand, two hundred forty-three".