105222731 has 2 divisors, whose sum is σ = 105222732. Its totient is φ = 105222730.

The previous prime is 105222727. The next prime is 105222751. The reversal of 105222731 is 137222501.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105222731 - 2² = 105222727 is a prime.

It is a super-2 number, since 2×105222731² = 22143646238196722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105222697 and 105222706.

It is not a weakly prime, because it can be changed into another prime (105222751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52611365 + 52611366.

It is an arithmetic number, because the mean of its divisors is an integer number (52611366).

Almost surely, 2^105222731 is an apocalyptic number.

105222731 is a deficient number, since it is larger than the sum of its proper divisors (1).

105222731 is an equidigital number, since it uses as much as digits as its factorization.

105222731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 105222731 is about 10257.8131685072. The cubic root of 105222731 is about 472.1027423448.

The spelling of 105222731 in words is "one hundred five million, two hundred twenty-two thousand, seven hundred thirty-one".