121030031 has 2 divisors, whose sum is σ = 121030032. Its totient is φ = 121030030.

The previous prime is 121030001. The next prime is 121030043. The reversal of 121030031 is 130030121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121030031 - 2⁶ = 121029967 is a prime.

It is a super-2 number, since 2×121030031² = 29296536807721922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 121029994 and 121030021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121030001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60515015 + 60515016.

It is an arithmetic number, because the mean of its divisors is an integer number (60515016).

Almost surely, 2^121030031 is an apocalyptic number.

121030031 is a deficient number, since it is larger than the sum of its proper divisors (1).

121030031 is an equidigital number, since it uses as much as digits as its factorization.

121030031 is an evil number, because the sum of its binary digits is even.

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

The square root of 121030031 is about 11001.3649607674. The cubic root of 121030031 is about 494.6496599352.

Adding to 121030031 its reverse (130030121), we get a palindrome (251060152).

The spelling of 121030031 in words is "one hundred twenty-one million, thirty thousand, thirty-one".