123223001131 has 4 divisors (see below), whose sum is σ = 124374618072. Its totient is φ = 122071384192.

The previous prime is 123223001113. The next prime is 123223001177. The reversal of 123223001131 is 131100322321.

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 123223001131 - 2¹⁷ = 123222870059 is a prime.

It is a super-2 number, since 2×123223001131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123223001099 and 123223001108.

It is not an unprimeable number, because it can be changed into a prime (123223005131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575808310 + ... + 575808523.

It is an arithmetic number, because the mean of its divisors is an integer number (31093654518).

Almost surely, 2^123223001131 is an apocalyptic number.

123223001131 is a deficient number, since it is larger than the sum of its proper divisors (1151616941).

123223001131 is a wasteful number, since it uses less digits than its factorization.

123223001131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151616940.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123223001131 its reverse (131100322321), we get a palindrome (254323323452).

The spelling of 123223001131 in words is "one hundred twenty-three billion, two hundred twenty-three million, one thousand, one hundred thirty-one".