133434131 has 16 divisors (see below), whose sum is σ = 145367040. Its totient is φ = 122057280.

The previous prime is 133434121. The next prime is 133434149. The reversal of 133434131 is 131434331.

It is a cyclic number.

It is not a de Polignac number, because 133434131 - 2¹⁰ = 133433107 is a prime.

It is a super-2 number, since 2×133434131² = 35609334631450322, 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 = 133434097 and 133434106.

It is not an unprimeable number, because it can be changed into a prime (133434101) 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, 79406 + ... + 81068.

It is an arithmetic number, because the mean of its divisors is an integer number (9085440).

Almost surely, 2^133434131 is an apocalyptic number.

133434131 is a deficient number, since it is larger than the sum of its proper divisors (11932909).

133434131 is a wasteful number, since it uses less digits than its factorization.

133434131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826.

The product of its digits is 1296, while the sum is 23.

The square root of 133434131 is about 11551.3692262000. The cubic root of 133434131 is about 511.0016595062.

Adding to 133434131 its reverse (131434331), we get a palindrome (264868462).

The spelling of 133434131 in words is "one hundred thirty-three million, four hundred thirty-four thousand, one hundred thirty-one".