121031879 has 4 divisors (see below), whose sum is σ = 121093560. Its totient is φ = 120970200.

The previous prime is 121031863. The next prime is 121031899. The reversal of 121031879 is 978130121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 978130121 = 107 ⋅9141403.

It is a cyclic number.

It is not a de Polignac number, because 121031879 - 2⁴ = 121031863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121031809) 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, 27797 + ... + 31854.

It is an arithmetic number, because the mean of its divisors is an integer number (30273390).

Almost surely, 2^121031879 is an apocalyptic number.

121031879 is a deficient number, since it is larger than the sum of its proper divisors (61681).

121031879 is an equidigital number, since it uses as much as digits as its factorization.

121031879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61680.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 121031879 is about 11001.4489500247. The cubic root of 121031879 is about 494.6521775139.

The spelling of 121031879 in words is "one hundred twenty-one million, thirty-one thousand, eight hundred seventy-nine".