121131319 has 4 divisors (see below), whose sum is σ = 121158640. Its totient is φ = 121104000.

The previous prime is 121131293. The next prime is 121131323. The reversal of 121131319 is 913131121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121131319 - 2⁵ = 121131287 is a prime.

It is a super-2 number, since 2×121131319² = 29345592885359522, which contains 22 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 121131319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121131349) 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, 5307 + ... + 16444.

It is an arithmetic number, because the mean of its divisors is an integer number (30289660).

Almost surely, 2^121131319 is an apocalyptic number.

121131319 is a deficient number, since it is larger than the sum of its proper divisors (27321).

121131319 is an equidigital number, since it uses as much as digits as its factorization.

121131319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27320.

The product of its digits is 162, while the sum is 22.

The square root of 121131319 is about 11005.9674268099. The cubic root of 121131319 is about 494.7876094570.

The spelling of 121131319 in words is "one hundred twenty-one million, one hundred thirty-one thousand, three hundred nineteen".