11550431020531 has 8 divisors (see below), whose sum is σ = 12439158021920. Its totient is φ = 10661737205952.

The previous prime is 11550431020517. The next prime is 11550431020537. The reversal of 11550431020531 is 13502013405511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11550431020531 - 2²⁵ = 11550397466099 is a prime.

It is a super-2 number, since 2×11550431020531² (a number of 27 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 = 11550431020493 and 11550431020502.

It is not an unprimeable number, because it can be changed into a prime (11550431020537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7571490 + ... + 8968183.

It is an arithmetic number, because the mean of its divisors is an integer number (1554894752740).

Almost surely, 2^{11550431020531} is an apocalyptic number.

11550431020531 is a deficient number, since it is larger than the sum of its proper divisors (888727001389).

11550431020531 is a wasteful number, since it uses less digits than its factorization.

11550431020531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16593405.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 11550431020531 in words is "eleven trillion, five hundred fifty billion, four hundred thirty-one million, twenty thousand, five hundred thirty-one".