105723131 has 2 divisors, whose sum is σ = 105723132. Its totient is φ = 105723130.

The previous prime is 105723127. The next prime is 105723151. The reversal of 105723131 is 131327501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105723131 - 2² = 105723127 is a prime.

It is a super-2 number, since 2×105723131² = 22354760856886322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105723097 and 105723106.

It is not a weakly prime, because it can be changed into another prime (105723151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52861565 + 52861566.

It is an arithmetic number, because the mean of its divisors is an integer number (52861566).

Almost surely, 2^105723131 is an apocalyptic number.

105723131 is a deficient number, since it is larger than the sum of its proper divisors (1).

105723131 is an equidigital number, since it uses as much as digits as its factorization.

105723131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 105723131 is about 10282.1754021219. The cubic root of 105723131 is about 472.8499405539.

The spelling of 105723131 in words is "one hundred five million, seven hundred twenty-three thousand, one hundred thirty-one".