1040523415531 has 4 divisors (see below), whose sum is σ = 1065902035464. Its totient is φ = 1015144795600.

The previous prime is 1040523415513. The next prime is 1040523415579. The reversal of 1040523415531 is 1355143250401.

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 1040523415531 - 2²¹ = 1040521318379 is a prime.

It is a super-2 number, since 2×1040523415531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1040523415231) 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, 12689309905 + ... + 12689309986.

It is an arithmetic number, because the mean of its divisors is an integer number (266475508866).

Almost surely, 2^{1040523415531} is an apocalyptic number.

1040523415531 is a deficient number, since it is larger than the sum of its proper divisors (25378619933).

1040523415531 is an equidigital number, since it uses as much as digits as its factorization.

1040523415531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25378619932.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 1040523415531 its reverse (1355143250401), we get a palindrome (2395666665932).

The spelling of 1040523415531 in words is "one trillion, forty billion, five hundred twenty-three million, four hundred fifteen thousand, five hundred thirty-one".