123001330031 has 4 divisors (see below), whose sum is σ = 123712320552. Its totient is φ = 122290339512.

The previous prime is 123001330007. The next prime is 123001330043. The reversal of 123001330031 is 130033100321.

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 123001330031 - 2¹⁰ = 123001329007 is a prime.

It is a super-2 number, since 2×123001330031² (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 = 123001329991 and 123001330009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123001330061) 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, 355495001 + ... + 355495346.

It is an arithmetic number, because the mean of its divisors is an integer number (30928080138).

Almost surely, 2^123001330031 is an apocalyptic number.

123001330031 is a deficient number, since it is larger than the sum of its proper divisors (710990521).

123001330031 is an equidigital number, since it uses as much as digits as its factorization.

123001330031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710990520.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 123001330031 its reverse (130033100321), we get a palindrome (253034430352).

The spelling of 123001330031 in words is "one hundred twenty-three billion, one million, three hundred thirty thousand, thirty-one".