121106031 has 4 divisors (see below), whose sum is σ = 161474712. Its totient is φ = 80737352.

The previous prime is 121106023. The next prime is 121106081. The reversal of 121106031 is 130601121.

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 121106031 - 2³ = 121106023 is a prime.

It is a super-2 number, since 2×121106031² = 29333341489145922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121106031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121106081) 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, 20184336 + ... + 20184341.

It is an arithmetic number, because the mean of its divisors is an integer number (40368678).

Almost surely, 2^121106031 is an apocalyptic number.

121106031 is a deficient number, since it is larger than the sum of its proper divisors (40368681).

121106031 is an equidigital number, since it uses as much as digits as its factorization.

121106031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40368680.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 121106031 is about 11004.8185355325. The cubic root of 121106031 is about 494.7531755881.

Adding to 121106031 its reverse (130601121), we get a palindrome (251707152).

The spelling of 121106031 in words is "one hundred twenty-one million, one hundred six thousand, thirty-one".