109487831 has 2 divisors, whose sum is σ = 109487832. Its totient is φ = 109487830.

The previous prime is 109487821. The next prime is 109487839. The reversal of 109487831 is 138784901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 109487831 - 2⁶ = 109487767 is a prime.

It is a super-2 number, since 2×109487831² = 23975170274169122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109487839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54743915 + 54743916.

It is an arithmetic number, because the mean of its divisors is an integer number (54743916).

Almost surely, 2^109487831 is an apocalyptic number.

109487831 is a deficient number, since it is larger than the sum of its proper divisors (1).

109487831 is an equidigital number, since it uses as much as digits as its factorization.

109487831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 109487831 is about 10463.6432947612. The cubic root of 109487831 is about 478.3971871304.

The spelling of 109487831 in words is "one hundred nine million, four hundred eighty-seven thousand, eight hundred thirty-one".