131111412 has 48 divisors (see below), whose sum is σ = 324741312. Its totient is φ = 41029120.

The previous prime is 131111389. The next prime is 131111437. The reversal of 131111412 is 214111131.

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

It is a junction number, because it is equal to n+sod(n) for n = 131111391 and 131111400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138862 + ... + 139802.

It is an arithmetic number, because the mean of its divisors is an integer number (6765444).

Almost surely, 2^131111412 is an apocalyptic number.

131111412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131111412 is an abundant number, since it is smaller than the sum of its proper divisors (193629900).

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

131111412 is a wasteful number, since it uses less digits than its factorization.

131111412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648 (or 1646 counting only the distinct ones).

The product of its digits is 24, while the sum is 15.

The square root of 131111412 is about 11450.3891636922. The cubic root of 131111412 is about 508.0192451427.

Adding to 131111412 its reverse (214111131), we get a palindrome (345222543).

The spelling of 131111412 in words is "one hundred thirty-one million, one hundred eleven thousand, four hundred twelve".