918330031 has 2 divisors, whose sum is σ = 918330032. Its totient is φ = 918330030.

The previous prime is 918330029. The next prime is 918330053. The reversal of 918330031 is 130033819.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 918330031 - 2¹ = 918330029 is a prime.

It is a super-2 number, since 2×918330031² = 1686660091672921922, which contains 22 as substring.

Together with 918330029, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (918330071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459165015 + 459165016.

It is an arithmetic number, because the mean of its divisors is an integer number (459165016).

Almost surely, 2^918330031 is an apocalyptic number.

918330031 is a deficient number, since it is larger than the sum of its proper divisors (1).

918330031 is an equidigital number, since it uses as much as digits as its factorization.

918330031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 918330031 is about 30303.9606487337. The cubic root of 918330031 is about 971.9999940022. Note that the first 5 decimals are identical.

The spelling of 918330031 in words is "nine hundred eighteen million, three hundred thirty thousand, thirty-one".