109231387 has 2 divisors, whose sum is σ = 109231388. Its totient is φ = 109231386.

The previous prime is 109231379. The next prime is 109231417. The reversal of 109231387 is 783132901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109231387 - 2³ = 109231379 is a prime.

It is not a weakly prime, because it can be changed into another prime (109231327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54615693 + 54615694.

It is an arithmetic number, because the mean of its divisors is an integer number (54615694).

Almost surely, 2^109231387 is an apocalyptic number.

109231387 is a deficient number, since it is larger than the sum of its proper divisors (1).

109231387 is an equidigital number, since it uses as much as digits as its factorization.

109231387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 109231387 is about 10451.3820617180. The cubic root of 109231387 is about 478.0233921782.

The spelling of 109231387 in words is "one hundred nine million, two hundred thirty-one thousand, three hundred eighty-seven".