40131123534 has 48 divisors (see below), whose sum is σ = 93859927200. Its totient is φ = 12354205248.

The previous prime is 40131123523. The next prime is 40131123551. The reversal of 40131123534 is 43532113104.

It is a happy number.

40131123534 is a `hidden beast` number, since 4 + 0 + 1 + 3 + 1 + 123 + 534 = 666.

It is a super-2 number, since 2×40131123534² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40131123498 and 40131123507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1659289 + ... + 1683300.

It is an arithmetic number, because the mean of its divisors is an integer number (1955415150).

Almost surely, 2^40131123534 is an apocalyptic number.

40131123534 is an abundant number, since it is smaller than the sum of its proper divisors (53728803666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40131123534 is a wasteful number, since it uses less digits than its factorization.

40131123534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3342649 (or 3342646 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 40131123534 its reverse (43532113104), we get a palindrome (83663236638).

The spelling of 40131123534 in words is "forty billion, one hundred thirty-one million, one hundred twenty-three thousand, five hundred thirty-four".