123131032302011 has 4 divisors (see below), whose sum is σ = 123139191553224. Its totient is φ = 123122873050800.

The previous prime is 123131032301993. The next prime is 123131032302037. The reversal of 123131032302011 is 110203230131321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123131032302011 is a prime.

It is a super-2 number, since 2×123131032302011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123131032302911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4079602970 + ... + 4079633151.

It is an arithmetic number, because the mean of its divisors is an integer number (30784797888306).

Almost surely, 2^{123131032302011} is an apocalyptic number.

123131032302011 is a deficient number, since it is larger than the sum of its proper divisors (8159251213).

123131032302011 is an equidigital number, since it uses as much as digits as its factorization.

123131032302011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8159251212.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 123131032302011 its reverse (110203230131321), we get a palindrome (233334262433332).

The spelling of 123131032302011 in words is "one hundred twenty-three trillion, one hundred thirty-one billion, thirty-two million, three hundred two thousand, eleven".