121000031 has 8 divisors (see below), whose sum is σ = 122579184. Its totient is φ = 119427840.

The previous prime is 121000003. The next prime is 121000049. The reversal of 121000031 is 130000121.

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 121000031 - 2¹⁴ = 120983647 is a prime.

It is a super-2 number, since 2×121000031² = 29282015004001922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120999982 and 121000018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39356 + ... + 42318.

It is an arithmetic number, because the mean of its divisors is an integer number (15322398).

Almost surely, 2^121000031 is an apocalyptic number.

121000031 is a deficient number, since it is larger than the sum of its proper divisors (1579153).

121000031 is an equidigital number, since it uses as much as digits as its factorization.

121000031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3481.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 121000031 is about 11000.0014090908. The cubic root of 121000031 is about 494.6087865642.

Adding to 121000031 its reverse (130000121), we get a palindrome (251000152).

The spelling of 121000031 in words is "one hundred twenty-one million, thirty-one", and thus it is an aban number.