121732131 has 8 divisors (see below), whose sum is σ = 163160064. Its totient is φ = 80729480.

The previous prime is 121732103. The next prime is 121732211. The reversal of 121732131 is 131237121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121732131 - 2⁶ = 121732067 is a prime.

It is a super-2 number, since 2×121732131² = 29637423435602322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121732098 and 121732107.

It is not an unprimeable number, because it can be changed into a prime (121732931) 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 7 ways as a sum of consecutive naturals, for example, 105651 + ... + 106796.

It is an arithmetic number, because the mean of its divisors is an integer number (20395008).

Almost surely, 2^121732131 is an apocalyptic number.

121732131 is a deficient number, since it is larger than the sum of its proper divisors (41427933).

121732131 is a wasteful number, since it uses less digits than its factorization.

121732131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212641.

The product of its digits is 252, while the sum is 21.

The square root of 121732131 is about 11033.2284939631. The cubic root of 121732131 is about 495.6043104045.

Adding to 121732131 its reverse (131237121), we get a palindrome (252969252).

The spelling of 121732131 in words is "one hundred twenty-one million, seven hundred thirty-two thousand, one hundred thirty-one".