134402131 has 4 divisors (see below), whose sum is σ = 134683200. Its totient is φ = 134121064.

The previous prime is 134402113. The next prime is 134402159. The reversal of 134402131 is 131204431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134402131 is a prime.

It is a super-2 number, since 2×134402131² = 36127865634682322, 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 = 134402099 and 134402108.

It is not an unprimeable number, because it can be changed into a prime (134402171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139816 + ... + 140773.

It is an arithmetic number, because the mean of its divisors is an integer number (33670800).

Almost surely, 2^134402131 is an apocalyptic number.

134402131 is a deficient number, since it is larger than the sum of its proper divisors (281069).

134402131 is an equidigital number, since it uses as much as digits as its factorization.

134402131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281068.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 134402131 is about 11593.1933046939. The cubic root of 134402131 is about 512.2343732368.

Adding to 134402131 its reverse (131204431), we get a palindrome (265606562).

The spelling of 134402131 in words is "one hundred thirty-four million, four hundred two thousand, one hundred thirty-one".