11431331000 has 128 divisors (see below), whose sum is σ = 28250164800. Its totient is φ = 4317580800.

The previous prime is 11431330997. The next prime is 11431331059. The reversal of 11431331000 is 13313411.

It is a super-2 number, since 2×11431331000² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11431331000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7086194 + ... + 7087806.

Almost surely, 2^11431331000 is an apocalyptic number.

11431331000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11431331000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14125082400).

11431331000 is an abundant number, since it is smaller than the sum of its proper divisors (16818833800).

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

11431331000 is a wasteful number, since it uses less digits than its factorization.

11431331000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2026 (or 2012 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 11431331000 its reverse (13313411), we get a palindrome (11444644411).

The spelling of 11431331000 in words is "eleven billion, four hundred thirty-one million, three hundred thirty-one thousand".