40731151 has 2 divisors, whose sum is σ = 40731152. Its totient is φ = 40731150.

The previous prime is 40731149. The next prime is 40731161. The reversal of 40731151 is 15113704.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40731151 - 2¹ = 40731149 is a prime.

Together with 40731149, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40731161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20365575 + 20365576.

It is an arithmetic number, because the mean of its divisors is an integer number (20365576).

Almost surely, 2^40731151 is an apocalyptic number.

40731151 is a deficient number, since it is larger than the sum of its proper divisors (1).

40731151 is an equidigital number, since it uses as much as digits as its factorization.

40731151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 40731151 is about 6382.0961290159. The cubic root of 40731151 is about 344.0663716129.

Adding to 40731151 its reverse (15113704), we get a palindrome (55844855).

The spelling of 40731151 in words is "forty million, seven hundred thirty-one thousand, one hundred fifty-one".