134330431521 has 16 divisors (see below), whose sum is σ = 210419697600. Its totient is φ = 75149891520.

The previous prime is 134330431493. The next prime is 134330431589. The reversal of 134330431521 is 125134033431.

It is a happy number.

It is not a de Polignac number, because 134330431521 - 2⁶ = 134330431457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (134330431421) 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, 156561846 + ... + 156562703.

It is an arithmetic number, because the mean of its divisors is an integer number (13151231100).

Almost surely, 2^134330431521 is an apocalyptic number.

134330431521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

134330431521 is a deficient number, since it is larger than the sum of its proper divisors (76089266079).

134330431521 is a wasteful number, since it uses less digits than its factorization.

134330431521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313124576.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 134330431521 its reverse (125134033431), we get a palindrome (259464464952).

The spelling of 134330431521 in words is "one hundred thirty-four billion, three hundred thirty million, four hundred thirty-one thousand, five hundred twenty-one".