131121323232 has 48 divisors (see below), whose sum is σ = 344376159120. Its totient is φ = 43683909632.

The previous prime is 131121323219. The next prime is 131121323293. The reversal of 131121323232 is 232323121131.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×131121323232² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180183 + ... + 542870.

It is an arithmetic number, because the mean of its divisors is an integer number (7174503315).

Almost surely, 2^131121323232 is an apocalyptic number.

131121323232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131121323232 is an abundant number, since it is smaller than the sum of its proper divisors (213254835888).

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

131121323232 is a wasteful number, since it uses less digits than its factorization.

131121323232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724955 (or 724947 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

Adding to 131121323232 its reverse (232323121131), we get a palindrome (363444444363).

The spelling of 131121323232 in words is "one hundred thirty-one billion, one hundred twenty-one million, three hundred twenty-three thousand, two hundred thirty-two".