131121416 has 8 divisors (see below), whose sum is σ = 245852670. Its totient is φ = 65560704.

The previous prime is 131121409. The next prime is 131121433. The reversal of 131121416 is 614121131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 83649316 + 47472100 = 9146^2 + 6890^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8195081 + ... + 8195096.

Almost surely, 2^131121416 is an apocalyptic number.

It is an amenable number.

131121416 is a deficient number, since it is larger than the sum of its proper divisors (114731254).

131121416 is a wasteful number, since it uses less digits than its factorization.

131121416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16390183 (or 16390179 counting only the distinct ones).

The product of its digits is 144, while the sum is 20.

The square root of 131121416 is about 11450.8259964074. The cubic root of 131121416 is about 508.0321656943.

Adding to 131121416 its reverse (614121131), we get a palindrome (745242547).

The spelling of 131121416 in words is "one hundred thirty-one million, one hundred twenty-one thousand, four hundred sixteen".