40062731 has 4 divisors (see below), whose sum is σ = 40122072. Its totient is φ = 40003392.

The previous prime is 40062691. The next prime is 40062739. The reversal of 40062731 is 13726004.

40062731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40062731 is a prime.

It is a super-2 number, since 2×40062731² = 3210044830356722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40062697 and 40062706.

It is not an unprimeable number, because it can be changed into a prime (40062739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28646 + ... + 30011.

It is an arithmetic number, because the mean of its divisors is an integer number (10030518).

Almost surely, 2^40062731 is an apocalyptic number.

40062731 is a deficient number, since it is larger than the sum of its proper divisors (59341).

40062731 is an equidigital number, since it uses as much as digits as its factorization.

40062731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59340.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 40062731 is about 6329.5126984627. The cubic root of 40062731 is about 342.1738767927.

Adding to 40062731 its reverse (13726004), we get a palindrome (53788735).

The spelling of 40062731 in words is "forty million, sixty-two thousand, seven hundred thirty-one".