131121110232 has 256 divisors, whose sum is σ = 431474688000. Its totient is φ = 36117518976.

The previous prime is 131121110203. The next prime is 131121110269. The reversal of 131121110232 is 232011121131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4747519 + ... + 4775057.

It is an arithmetic number, because the mean of its divisors is an integer number (1685448000).

Almost surely, 2^131121110232 is an apocalyptic number.

131121110232 is a gapful number since it is divisible by the number (12) 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 131121110232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215737344000).

131121110232 is an abundant number, since it is smaller than the sum of its proper divisors (300353577768).

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

131121110232 is a wasteful number, since it uses less digits than its factorization.

131121110232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27675 (or 27665 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 131121110232 its reverse (232011121131), we get a palindrome (363132231363).

The spelling of 131121110232 in words is "one hundred thirty-one billion, one hundred twenty-one million, one hundred ten thousand, two hundred thirty-two".