331132121 has 8 divisors (see below), whose sum is σ = 350518080. Its totient is φ = 312277392.

The previous prime is 331132117. The next prime is 331132141. The reversal of 331132121 is 121231133.

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 331132121 - 2² = 331132117 is a prime.

It is a super-5 number, since 5×331132121⁵ (a number of 44 digits) contains 55555 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 331132121.

It is not an unprimeable number, because it can be changed into a prime (331132141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131525 + ... + 134018.

It is an arithmetic number, because the mean of its divisors is an integer number (43814760).

Almost surely, 2^331132121 is an apocalyptic number.

It is an amenable number.

331132121 is a deficient number, since it is larger than the sum of its proper divisors (19385959).

331132121 is a wasteful number, since it uses less digits than its factorization.

331132121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265615.

The product of its digits is 108, while the sum is 17.

The square root of 331132121 is about 18197.0360498626. The cubic root of 331132121 is about 691.8316670142.

Adding to 331132121 its reverse (121231133), we get a palindrome (452363254).

The spelling of 331132121 in words is "three hundred thirty-one million, one hundred thirty-two thousand, one hundred twenty-one".