105180731 has 2 divisors, whose sum is σ = 105180732. Its totient is φ = 105180730.

The previous prime is 105180727. The next prime is 105180763. The reversal of 105180731 is 137081501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105180731 - 2² = 105180727 is a prime.

It is a super-2 number, since 2×105180731² = 22125972347388722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105180731.

It is not a weakly prime, because it can be changed into another prime (105180701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52590365 + 52590366.

It is an arithmetic number, because the mean of its divisors is an integer number (52590366).

Almost surely, 2^105180731 is an apocalyptic number.

105180731 is a deficient number, since it is larger than the sum of its proper divisors (1).

105180731 is an equidigital number, since it uses as much as digits as its factorization.

105180731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 105180731 is about 10255.7657442046. The cubic root of 105180731 is about 472.0399201968.

The spelling of 105180731 in words is "one hundred five million, one hundred eighty thousand, seven hundred thirty-one".