121323243031 has 12 divisors (see below), whose sum is σ = 125388008616. Its totient is φ = 117386303760.

The previous prime is 121323243023. The next prime is 121323243047. The reversal of 121323243031 is 130342323121.

It is not a de Polignac number, because 121323243031 - 2³ = 121323243023 is a prime.

It is a super-2 number, since 2×121323243031² (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 = 121323242987 and 121323243005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121323243011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6715096 + ... + 6733138.

It is an arithmetic number, because the mean of its divisors is an integer number (10449000718).

Almost surely, 2^121323243031 is an apocalyptic number.

121323243031 is a deficient number, since it is larger than the sum of its proper divisors (4064765585).

121323243031 is an equidigital number, since it uses as much as digits as its factorization.

121323243031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25102 (or 25071 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 121323243031 its reverse (130342323121), we get a palindrome (251665566152).

The spelling of 121323243031 in words is "one hundred twenty-one billion, three hundred twenty-three million, two hundred forty-three thousand, thirty-one".