40313123 has 2 divisors, whose sum is σ = 40313124. Its totient is φ = 40313122.

The previous prime is 40313101. The next prime is 40313167. The reversal of 40313123 is 32131304.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40313123 - 2¹⁶ = 40247587 is a prime.

It is not a weakly prime, because it can be changed into another prime (40313723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20156561 + 20156562.

It is an arithmetic number, because the mean of its divisors is an integer number (20156562).

Almost surely, 2^40313123 is an apocalyptic number.

40313123 is a deficient number, since it is larger than the sum of its proper divisors (1).

40313123 is an equidigital number, since it uses as much as digits as its factorization.

40313123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 40313123 is about 6349.2616106127. The cubic root of 40313123 is about 342.8852588467.

Adding to 40313123 its reverse (32131304), we get a palindrome (72444427).

The spelling of 40313123 in words is "forty million, three hundred thirteen thousand, one hundred twenty-three".