123231231031 has 8 divisors (see below), whose sum is σ = 134689163904. Its totient is φ = 112240968960.

The previous prime is 123231231029. The next prime is 123231231037. The reversal of 123231231031 is 130132132321.

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 123231231031 - 2¹ = 123231231029 is a prime.

It is a super-2 number, since 2×123231231031² (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 = 123231230993 and 123231231011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123231231037) 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, 116917150 + ... + 116918203.

It is an arithmetic number, because the mean of its divisors is an integer number (16836145488).

Almost surely, 2^123231231031 is an apocalyptic number.

123231231031 is a deficient number, since it is larger than the sum of its proper divisors (11457932873).

123231231031 is a wasteful number, since it uses less digits than its factorization.

123231231031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233835401.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 123231231031 its reverse (130132132321), we get a palindrome (253363363352).

The spelling of 123231231031 in words is "one hundred twenty-three billion, two hundred thirty-one million, two hundred thirty-one thousand, thirty-one".