40631113 has 2 divisors, whose sum is σ = 40631114. Its totient is φ = 40631112.

The previous prime is 40631093. The next prime is 40631137. The reversal of 40631113 is 31113604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37491129 + 3139984 = 6123^2 + 1772^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40631113 is a prime.

It is not a weakly prime, because it can be changed into another prime (40631183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20315556 + 20315557.

It is an arithmetic number, because the mean of its divisors is an integer number (20315557).

Almost surely, 2^40631113 is an apocalyptic number.

It is an amenable number.

40631113 is a deficient number, since it is larger than the sum of its proper divisors (1).

40631113 is an equidigital number, since it uses as much as digits as its factorization.

40631113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 40631113 is about 6374.2539171263. The cubic root of 40631113 is about 343.7844585622.

Adding to 40631113 its reverse (31113604), we get a palindrome (71744717).

The spelling of 40631113 in words is "forty million, six hundred thirty-one thousand, one hundred thirteen".