134513631121 has 9 divisors (see below), whose sum is σ = 139004502249. Its totient is φ = 130163478900.

The previous prime is 134513631107. The next prime is 134513631149. The reversal of 134513631121 is 121136315431.

The square root of 134513631121 is 366761.

It is a perfect power (a square), and thus also a powerful number.

It is a de Polignac number, because none of the positive numbers 2^k-134513631121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134513631821) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11363676 + ... + 11375506.

Almost surely, 2^134513631121 is an apocalyptic number.

134513631121 is the 366761-st square number.

134513631121 is the 183381-st centered octagonal number.

It is an amenable number.

134513631121 is a deficient number, since it is larger than the sum of its proper divisors (4490871128).

134513631121 is an frugal number, since it uses more digits than its factorization.

134513631121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23724 (or 11862 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

Adding to 134513631121 its reverse (121136315431), we get a palindrome (255649946552).

The spelling of 134513631121 in words is "one hundred thirty-four billion, five hundred thirteen million, six hundred thirty-one thousand, one hundred twenty-one".