40780631 has 8 divisors (see below), whose sum is σ = 43841280. Its totient is φ = 37811448.

The previous prime is 40780613. The next prime is 40780657. The reversal of 40780631 is 13608704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40780631 - 2¹⁸ = 40518487 is a prime.

It is a super-2 number, since 2×40780631² = 3326119729516322, 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 = 40780594 and 40780603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40780681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21941 + ... + 23726.

It is an arithmetic number, because the mean of its divisors is an integer number (5480160).

Almost surely, 2^40780631 is an apocalyptic number.

40780631 is a deficient number, since it is larger than the sum of its proper divisors (3060649).

40780631 is a wasteful number, since it uses less digits than its factorization.

40780631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45733.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 40780631 is about 6385.9714217964. The cubic root of 40780631 is about 344.2056386078.

The spelling of 40780631 in words is "forty million, seven hundred eighty thousand, six hundred thirty-one".