40767631 has 2 divisors, whose sum is σ = 40767632. Its totient is φ = 40767630.

The previous prime is 40767619. The next prime is 40767637. The reversal of 40767631 is 13676704.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40767631 - 2¹⁷ = 40636559 is a prime.

It is a super-2 number, since 2×40767631² = 3323999474704322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40767637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20383815 + 20383816.

It is an arithmetic number, because the mean of its divisors is an integer number (20383816).

Almost surely, 2^40767631 is an apocalyptic number.

40767631 is a deficient number, since it is larger than the sum of its proper divisors (1).

40767631 is an equidigital number, since it uses as much as digits as its factorization.

40767631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 40767631 is about 6384.9534845604. The cubic root of 40767631 is about 344.1690595689.

The spelling of 40767631 in words is "forty million, seven hundred sixty-seven thousand, six hundred thirty-one".