1231220030123 has 8 divisors (see below), whose sum is σ = 1298075013120. Its totient is φ = 1164570440040.

The previous prime is 1231220030113. The next prime is 1231220030143. The reversal of 1231220030123 is 3210300221321.

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 1231220030123 - 2⁴ = 1231220030107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231220030095 and 1231220030104.

It is not an unprimeable number, because it can be changed into a prime (1231220030113) 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, 51335915 + ... + 51359892.

It is an arithmetic number, because the mean of its divisors is an integer number (162259376640).

Almost surely, 2^{1231220030123} is an apocalyptic number.

1231220030123 is a deficient number, since it is larger than the sum of its proper divisors (66854982997).

1231220030123 is a wasteful number, since it uses less digits than its factorization.

1231220030123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102696457.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1231220030123 its reverse (3210300221321), we get a palindrome (4441520251444).

The spelling of 1231220030123 in words is "one trillion, two hundred thirty-one billion, two hundred twenty million, thirty thousand, one hundred twenty-three".