40680131 has 4 divisors (see below), whose sum is σ = 41779632. Its totient is φ = 39580632.

The previous prime is 40680119. The next prime is 40680137. The reversal of 40680131 is 13108604.

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

It is a cyclic number.

It is not a de Polignac number, because 40680131 - 2¹⁸ = 40417987 is a prime.

It is a super-2 number, since 2×40680131² = 3309746116354322, 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 = 40680097 and 40680106.

It is not an unprimeable number, because it can be changed into a prime (40680137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549695 + ... + 549768.

It is an arithmetic number, because the mean of its divisors is an integer number (10444908).

Almost surely, 2^40680131 is an apocalyptic number.

40680131 is a deficient number, since it is larger than the sum of its proper divisors (1099501).

40680131 is a wasteful number, since it uses less digits than its factorization.

40680131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099500.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 40680131 is about 6378.0977571687. The cubic root of 40680131 is about 343.9226519580.

Adding to 40680131 its reverse (13108604), we get a palindrome (53788735).

The spelling of 40680131 in words is "forty million, six hundred eighty thousand, one hundred thirty-one".