121030131231 has 40 divisors (see below), whose sum is σ = 182838732384. Its totient is φ = 79778260800.

The previous prime is 121030131221. The next prime is 121030131269. The reversal of 121030131231 is 132131030121.

121030131231 is a `hidden beast` number, since 1 + 21 + 0 + 301 + 312 + 31 = 666.

It is not a de Polignac number, because 121030131231 - 2¹⁵ = 121030098463 is a prime.

It is a super-2 number, since 2×121030131231² (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 (121030131221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6183246 + ... + 6202788.

Almost surely, 2^121030131231 is an apocalyptic number.

121030131231 is a deficient number, since it is larger than the sum of its proper divisors (61808601153).

121030131231 is a wasteful number, since it uses less digits than its factorization.

121030131231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20413 (or 20404 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 121030131231 its reverse (132131030121), we get a palindrome (253161161352).

The spelling of 121030131231 in words is "one hundred twenty-one billion, thirty million, one hundred thirty-one thousand, two hundred thirty-one".