40342434131 has 4 divisors (see below), whose sum is σ = 40346250264. Its totient is φ = 40338618000.

The previous prime is 40342434113. The next prime is 40342434163. The reversal of 40342434131 is 13143424304.

It is a happy number.

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 40342434131 - 2¹⁴ = 40342417747 is a prime.

It is a super-2 number, since 2×40342434131² (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 = 40342434094 and 40342434103.

It is not an unprimeable number, because it can be changed into a prime (40342434191) 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, 1892165 + ... + 1913366.

It is an arithmetic number, because the mean of its divisors is an integer number (10086562566).

Almost surely, 2^40342434131 is an apocalyptic number.

40342434131 is a deficient number, since it is larger than the sum of its proper divisors (3816133).

40342434131 is a wasteful number, since it uses less digits than its factorization.

40342434131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3816132.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 40342434131 its reverse (13143424304), we get a palindrome (53485858435).

The spelling of 40342434131 in words is "forty billion, three hundred forty-two million, four hundred thirty-four thousand, one hundred thirty-one".