121686323 has 16 divisors (see below), whose sum is σ = 140940000. Its totient is φ = 103833600.

The previous prime is 121686247. The next prime is 121686329. The reversal of 121686323 is 323686121.

It is a cyclic number.

It is not a de Polignac number, because 121686323 - 2¹⁶ = 121620787 is a prime.

It is a super-2 number, since 2×121686323² = 29615122410520658, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121686323.

It is not an unprimeable number, because it can be changed into a prime (121686329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96803 + ... + 98051.

It is an arithmetic number, because the mean of its divisors is an integer number (8808750).

Almost surely, 2^121686323 is an apocalyptic number.

121686323 is a deficient number, since it is larger than the sum of its proper divisors (19253677).

121686323 is a wasteful number, since it uses less digits than its factorization.

121686323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798.

The product of its digits is 10368, while the sum is 32.

The square root of 121686323 is about 11031.1523876701. The cubic root of 121686323 is about 495.5421370343.

The spelling of 121686323 in words is "one hundred twenty-one million, six hundred eighty-six thousand, three hundred twenty-three".