109253681 has 2 divisors, whose sum is σ = 109253682. Its totient is φ = 109253680.

The previous prime is 109253659. The next prime is 109253687. The reversal of 109253681 is 186352901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108472225 + 781456 = 10415^2 + 884^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109253681 is a prime.

It is a super-2 number, since 2×109253681² = 23872733624099522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (109253687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54626840 + 54626841.

It is an arithmetic number, because the mean of its divisors is an integer number (54626841).

Almost surely, 2^109253681 is an apocalyptic number.

It is an amenable number.

109253681 is a deficient number, since it is larger than the sum of its proper divisors (1).

109253681 is an equidigital number, since it uses as much as digits as its factorization.

109253681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 109253681 is about 10452.4485648101. The cubic root of 109253681 is about 478.0559113068.

The spelling of 109253681 in words is "one hundred nine million, two hundred fifty-three thousand, six hundred eighty-one".