121836231 has 60 divisors (see below), whose sum is σ = 207020352. Its totient is φ = 71280000.

The previous prime is 121836223. The next prime is 121836251. The reversal of 121836231 is 132638121.

It is a happy number.

It is not a de Polignac number, because 121836231 - 2³ = 121836223 is a prime.

It is a super-2 number, since 2×121836231² = 29688134368570722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 121836195 and 121836204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121836251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 303631 + ... + 304031.

Almost surely, 2^121836231 is an apocalyptic number.

121836231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121836231 is a deficient number, since it is larger than the sum of its proper divisors (85184121).

121836231 is a wasteful number, since it uses less digits than its factorization.

121836231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 446 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 121836231 is about 11037.9450533150. The cubic root of 121836231 is about 495.7455432046.

The spelling of 121836231 in words is "one hundred twenty-one million, eight hundred thirty-six thousand, two hundred thirty-one".