131121412 has 24 divisors (see below), whose sum is σ = 240932160. Its totient is φ = 62351520.

The previous prime is 131121409. The next prime is 131121433. The reversal of 131121412 is 214121131.

131121412 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 664 + ... + 16207.

It is an arithmetic number, because the mean of its divisors is an integer number (10038840).

Almost surely, 2^131121412 is an apocalyptic number.

It is an amenable number.

131121412 is a deficient number, since it is larger than the sum of its proper divisors (109810748).

131121412 is a wasteful number, since it uses less digits than its factorization.

131121412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16971 (or 16969 counting only the distinct ones).

The product of its digits is 48, while the sum is 16.

The square root of 131121412 is about 11450.8258217475. The cubic root of 131121412 is about 508.0321605283.

Adding to 131121412 its reverse (214121131), we get a palindrome (345242543).

The spelling of 131121412 in words is "one hundred thirty-one million, one hundred twenty-one thousand, four hundred twelve".