134640331 has 8 divisors (see below), whose sum is σ = 154068224. Its totient is φ = 115260840.

The previous prime is 134640329. The next prime is 134640343. The reversal of 134640331 is 133046431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 134640331 - 2¹ = 134640329 is a prime.

It is a super-2 number, since 2×134640331² = 36256037463579122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 134640296 and 134640305.

It is not an unprimeable number, because it can be changed into a prime (134640371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5925 + ... + 17446.

It is an arithmetic number, because the mean of its divisors is an integer number (19258528).

Almost surely, 2^134640331 is an apocalyptic number.

134640331 is a deficient number, since it is larger than the sum of its proper divisors (19427893).

134640331 is an equidigital number, since it uses as much as digits as its factorization.

134640331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24201.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 134640331 is about 11603.4620264816. The cubic root of 134640331 is about 512.5368044955.

Adding to 134640331 its reverse (133046431), we get a palindrome (267686762).

The spelling of 134640331 in words is "one hundred thirty-four million, six hundred forty thousand, three hundred thirty-one".