11811450831 has 8 divisors (see below), whose sum is σ = 15772004400. Its totient is φ = 7862598912.

The previous prime is 11811450809. The next prime is 11811450841. The reversal of 11811450831 is 13805411811.

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

It is not a de Polignac number, because 11811450831 - 2⁵ = 11811450799 is a prime.

It is a super-2 number, since 2×11811450831² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11811450792 and 11811450801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11811450841) 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, 2923056 + ... + 2927093.

It is an arithmetic number, because the mean of its divisors is an integer number (1971500550).

Almost surely, 2^11811450831 is an apocalyptic number.

11811450831 is a deficient number, since it is larger than the sum of its proper divisors (3960553569).

11811450831 is an equidigital number, since it uses as much as digits as its factorization.

11811450831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5850825.

The product of its (nonzero) digits is 3840, while the sum is 33.

The spelling of 11811450831 in words is "eleven billion, eight hundred eleven million, four hundred fifty thousand, eight hundred thirty-one".