40120214531 has 4 divisors (see below), whose sum is σ = 40177448064. Its totient is φ = 40062981000.

The previous prime is 40120214513. The next prime is 40120214549. The reversal of 40120214531 is 13541202104.

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

It is an interprime number because it is at equal distance from previous prime (40120214513) and next prime (40120214549).

It is a cyclic number.

It is not a de Polignac number, because 40120214531 - 2³⁴ = 22940345347 is a prime.

It is a super-2 number, since 2×40120214531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40120214497 and 40120214506.

It is not an unprimeable number, because it can be changed into a prime (40120214501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28615715 + ... + 28617116.

It is an arithmetic number, because the mean of its divisors is an integer number (10044362016).

Almost surely, 2^40120214531 is an apocalyptic number.

40120214531 is a deficient number, since it is larger than the sum of its proper divisors (57233533).

40120214531 is an equidigital number, since it uses as much as digits as its factorization.

40120214531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57233532.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 40120214531 its reverse (13541202104), we get a palindrome (53661416635).

The spelling of 40120214531 in words is "forty billion, one hundred twenty million, two hundred fourteen thousand, five hundred thirty-one".