121531382 has 8 divisors (see below), whose sum is σ = 208339536. Its totient is φ = 52084872.

The previous prime is 121531363. The next prime is 121531393. The reversal of 121531382 is 283135121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4340393 + ... + 4340420.

It is an arithmetic number, because the mean of its divisors is an integer number (26042442).

Almost surely, 2^121531382 is an apocalyptic number.

121531382 is a deficient number, since it is larger than the sum of its proper divisors (86808154).

121531382 is an equidigital number, since it uses as much as digits as its factorization.

121531382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8680822.

The product of its digits is 1440, while the sum is 26.

The square root of 121531382 is about 11024.1272670448. The cubic root of 121531382 is about 495.3317260835.

The spelling of 121531382 in words is "one hundred twenty-one million, five hundred thirty-one thousand, three hundred eighty-two".