109847431 has 2 divisors, whose sum is σ = 109847432. Its totient is φ = 109847430.

The previous prime is 109847399. The next prime is 109847443. The reversal of 109847431 is 134748901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 109847431 - 2⁵ = 109847399 is a prime.

It is a super-2 number, since 2×109847431² = 24132916194599522, 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 (109847461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54923715 + 54923716.

It is an arithmetic number, because the mean of its divisors is an integer number (54923716).

Almost surely, 2^109847431 is an apocalyptic number.

109847431 is a deficient number, since it is larger than the sum of its proper divisors (1).

109847431 is an equidigital number, since it uses as much as digits as its factorization.

109847431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 109847431 is about 10480.8125162127. The cubic root of 109847431 is about 478.9203613516.

The spelling of 109847431 in words is "one hundred nine million, eight hundred forty-seven thousand, four hundred thirty-one".