109900031 has 2 divisors, whose sum is σ = 109900032. Its totient is φ = 109900030.

The previous prime is 109899997. The next prime is 109900079. The reversal of 109900031 is 130009901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109900031 - 2²² = 105705727 is a prime.

It is a super-2 number, since 2×109900031² = 24156033627601922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109902031) 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, 54950015 + 54950016.

It is an arithmetic number, because the mean of its divisors is an integer number (54950016).

Almost surely, 2^109900031 is an apocalyptic number.

109900031 is a deficient number, since it is larger than the sum of its proper divisors (1).

109900031 is an equidigital number, since it uses as much as digits as its factorization.

109900031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 109900031 is about 10483.3215633214. The cubic root of 109900031 is about 478.9967921822.

Adding to 109900031 its reverse (130009901), we get a palindrome (239909932).

The spelling of 109900031 in words is "one hundred nine million, nine hundred thousand, thirty-one".