40420713131 has 4 divisors (see below), whose sum is σ = 41280728352. Its totient is φ = 39560697912.

The previous prime is 40420713121. The next prime is 40420713143. The reversal of 40420713131 is 13131702404.

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-40420713131 is a prime.

It is a super-2 number, since 2×40420713131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40420713131.

It is not an unprimeable number, because it can be changed into a prime (40420713121) 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, 430007540 + ... + 430007633.

It is an arithmetic number, because the mean of its divisors is an integer number (10320182088).

Almost surely, 2^40420713131 is an apocalyptic number.

40420713131 is a deficient number, since it is larger than the sum of its proper divisors (860015221).

40420713131 is an equidigital number, since it uses as much as digits as its factorization.

40420713131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860015220.

The product of its (nonzero) digits is 2016, while the sum is 26.

The spelling of 40420713131 in words is "forty billion, four hundred twenty million, seven hundred thirteen thousand, one hundred thirty-one".