109072531 has 2 divisors, whose sum is σ = 109072532. Its totient is φ = 109072530.

The previous prime is 109072519. The next prime is 109072547. The reversal of 109072531 is 135270901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109072531 - 2¹⁹ = 108548243 is a prime.

It is a super-2 number, since 2×109072531² = 23793634037491922, which contains 22 as substring.

It is equal to p_6253093 and since 109072531 and 6253093 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109072531.

It is not a weakly prime, because it can be changed into another prime (109072511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54536265 + 54536266.

It is an arithmetic number, because the mean of its divisors is an integer number (54536266).

Almost surely, 2^109072531 is an apocalyptic number.

109072531 is a deficient number, since it is larger than the sum of its proper divisors (1).

109072531 is an equidigital number, since it uses as much as digits as its factorization.

109072531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 109072531 is about 10443.7795361641. The cubic root of 109072531 is about 477.7915487868.

The spelling of 109072531 in words is "one hundred nine million, seventy-two thousand, five hundred thirty-one".