131134124421 has 16 divisors (see below), whose sum is σ = 194349635520. Its totient is φ = 87388163280.

The previous prime is 131134124389. The next prime is 131134124431. The reversal of 131134124421 is 124421431131.

It is a happy number.

131134124421 is a `hidden beast` number, since 1 + 3 + 113 + 4 + 124 + 421 = 666.

It is not a de Polignac number, because 131134124421 - 2⁵ = 131134124389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131134124431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 891130 + ... + 1027803.

It is an arithmetic number, because the mean of its divisors is an integer number (12146852220).

Almost surely, 2^131134124421 is an apocalyptic number.

It is an amenable number.

131134124421 is a deficient number, since it is larger than the sum of its proper divisors (63215511099).

131134124421 is a wasteful number, since it uses less digits than its factorization.

131134124421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921473 (or 1921467 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 131134124421 its reverse (124421431131), we get a palindrome (255555555552).

The spelling of 131134124421 in words is "one hundred thirty-one billion, one hundred thirty-four million, one hundred twenty-four thousand, four hundred twenty-one".