121323131 has 8 divisors (see below), whose sum is σ = 123431424. Its totient is φ = 119223720.

The previous prime is 121323107. The next prime is 121323143. The reversal of 121323131 is 131323121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121323131 is a prime.

It is a super-2 number, since 2×121323131² = 29438604231286322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121323031) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 29066 + ... + 32976.

It is an arithmetic number, because the mean of its divisors is an integer number (15428928).

Almost surely, 2^121323131 is an apocalyptic number.

121323131 is a deficient number, since it is larger than the sum of its proper divisors (2108293).

121323131 is an equidigital number, since it uses as much as digits as its factorization.

121323131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4441.

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

The square root of 121323131 is about 11014.6779798594. The cubic root of 121323131 is about 495.0486378763.

Adding to 121323131 its reverse (131323121), we get a palindrome (252646252).

The spelling of 121323131 in words is "one hundred twenty-one million, three hundred twenty-three thousand, one hundred thirty-one".