123312031031 has 8 divisors (see below), whose sum is σ = 141041972640. Its totient is φ = 105610573728.

The previous prime is 123312031021. The next prime is 123312031057. The reversal of 123312031031 is 130130213321.

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 123312031031 - 2¹⁸ = 123311768887 is a prime.

It is a super-2 number, since 2×123312031031² (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 = 123312030994 and 123312031012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123312031021) 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, 7111796 + ... + 7129113.

It is an arithmetic number, because the mean of its divisors is an integer number (17630246580).

Almost surely, 2^123312031031 is an apocalyptic number.

123312031031 is a deficient number, since it is larger than the sum of its proper divisors (17729941609).

123312031031 is a wasteful number, since it uses less digits than its factorization.

123312031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14242153.

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

Adding to 123312031031 its reverse (130130213321), we get a palindrome (253442244352).

The spelling of 123312031031 in words is "one hundred twenty-three billion, three hundred twelve million, thirty-one thousand, thirty-one".