123031301231 has 4 divisors (see below), whose sum is σ = 123148363464. Its totient is φ = 122914239000.

The previous prime is 123031301213. The next prime is 123031301257. The reversal of 123031301231 is 132103130321.

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 123031301231 - 2⁶ = 123031301167 is a prime.

It is a super-2 number, since 2×123031301231² (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 (123031301291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58529540 + ... + 58531641.

It is an arithmetic number, because the mean of its divisors is an integer number (30787090866).

Almost surely, 2^123031301231 is an apocalyptic number.

123031301231 is a deficient number, since it is larger than the sum of its proper divisors (117062233).

123031301231 is a wasteful number, since it uses less digits than its factorization.

123031301231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117062232.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 123031301231 its reverse (132103130321), we get a palindrome (255134431552).

The spelling of 123031301231 in words is "one hundred twenty-three billion, thirty-one million, three hundred one thousand, two hundred thirty-one".