40053231523 has 4 divisors (see below), whose sum is σ = 42161296360. Its totient is φ = 37945166688.

The previous prime is 40053231487. The next prime is 40053231541. The reversal of 40053231523 is 32513235004.

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 40053231523 - 2⁹ = 40053231011 is a prime.

It is a super-2 number, since 2×40053231523² (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 = 40053231491 and 40053231500.

It is not an unprimeable number, because it can be changed into a prime (40053231563) 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, 1054032390 + ... + 1054032427.

It is an arithmetic number, because the mean of its divisors is an integer number (10540324090).

Almost surely, 2^40053231523 is an apocalyptic number.

40053231523 is a deficient number, since it is larger than the sum of its proper divisors (2108064837).

40053231523 is a wasteful number, since it uses less digits than its factorization.

40053231523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2108064836.

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 40053231523 its reverse (32513235004), we get a palindrome (72566466527).

The spelling of 40053231523 in words is "forty billion, fifty-three million, two hundred thirty-one thousand, five hundred twenty-three".