121431382 has 8 divisors (see below), whose sum is σ = 183759336. Its totient is φ = 60178272.

The previous prime is 121431379. The next prime is 121431383. The reversal of 121431382 is 283134121.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121431383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268428 + ... + 268879.

It is an arithmetic number, because the mean of its divisors is an integer number (22969917).

Almost surely, 2^121431382 is an apocalyptic number.

121431382 is a deficient number, since it is larger than the sum of its proper divisors (62327954).

121431382 is a wasteful number, since it uses less digits than its factorization.

121431382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537422.

The product of its digits is 1152, while the sum is 25.

The square root of 121431382 is about 11019.5908272494. The cubic root of 121431382 is about 495.1958304165.

The spelling of 121431382 in words is "one hundred twenty-one million, four hundred thirty-one thousand, three hundred eighty-two".