121123131031 has 8 divisors (see below), whose sum is σ = 138500833184. Its totient is φ = 103764028320.

The previous prime is 121123130993. The next prime is 121123131079. The reversal of 121123131031 is 130131321121.

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 121123131031 - 2¹⁵ = 121123098263 is a prime.

It is a super-2 number, since 2×121123131031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121123131431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4635900 + ... + 4661953.

It is an arithmetic number, because the mean of its divisors is an integer number (17312604148).

Almost surely, 2^121123131031 is an apocalyptic number.

121123131031 is a deficient number, since it is larger than the sum of its proper divisors (17377702153).

121123131031 is an equidigital number, since it uses as much as digits as its factorization.

121123131031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9299721.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 121123131031 its reverse (130131321121), we get a palindrome (251254452152).

The spelling of 121123131031 in words is "one hundred twenty-one billion, one hundred twenty-three million, one hundred thirty-one thousand, thirty-one".