123011243031 has 8 divisors (see below), whose sum is σ = 172647358720. Its totient is φ = 77691311352.

The previous prime is 123011243021. The next prime is 123011243053. The reversal of 123011243031 is 130342110321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123011243031 - 2⁷ = 123011242903 is a prime.

It is a super-2 number, since 2×123011243031² (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 = 123011242989 and 123011243007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123011243021) 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, 1079045935 + ... + 1079046048.

It is an arithmetic number, because the mean of its divisors is an integer number (21580919840).

Almost surely, 2^123011243031 is an apocalyptic number.

123011243031 is a deficient number, since it is larger than the sum of its proper divisors (49636115689).

123011243031 is a wasteful number, since it uses less digits than its factorization.

123011243031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158092005.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 123011243031 its reverse (130342110321), we get a palindrome (253353353352).

The spelling of 123011243031 in words is "one hundred twenty-three billion, eleven million, two hundred forty-three thousand, thirty-one".