131111032 has 32 divisors (see below), whose sum is σ = 266364000. Its totient is φ = 60142464.

The previous prime is 131111011. The next prime is 131111081. The reversal of 131111032 is 230111131.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13594 + ... + 21142.

It is an arithmetic number, because the mean of its divisors is an integer number (8323875).

Almost surely, 2^131111032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131111032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133182000).

131111032 is an abundant number, since it is smaller than the sum of its proper divisors (135252968).

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

131111032 is a wasteful number, since it uses less digits than its factorization.

131111032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7735 (or 7731 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 131111032 is about 11450.3725703577. The cubic root of 131111032 is about 508.0187543451.

Adding to 131111032 its reverse (230111131), we get a palindrome (361222163).

Subtracting 131111032 from its reverse (230111131), we obtain a palindrome (99000099).

The spelling of 131111032 in words is "one hundred thirty-one million, one hundred eleven thousand, thirty-two".