121300031 has 2 divisors, whose sum is σ = 121300032. Its totient is φ = 121300030.

The previous prime is 121300027. The next prime is 121300037. The reversal of 121300031 is 130003121.

It is a weak prime.

It is an emirp because it is prime and its reverse (130003121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121300031 - 2² = 121300027 is a prime.

It is a super-2 number, since 2×121300031² = 29427395041201922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121299985 and 121300021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121300037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60650015 + 60650016.

It is an arithmetic number, because the mean of its divisors is an integer number (60650016).

Almost surely, 2^121300031 is an apocalyptic number.

121300031 is a deficient number, since it is larger than the sum of its proper divisors (1).

121300031 is an equidigital number, since it uses as much as digits as its factorization.

121300031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 121300031 is about 11013.6293291539. The cubic root of 121300031 is about 495.0172166919.

Adding to 121300031 its reverse (130003121), we get a palindrome (251303152).

The spelling of 121300031 in words is "one hundred twenty-one million, three hundred thousand, thirty-one".