65134431 has 24 divisors (see below), whose sum is σ = 95696640. Its totient is φ = 42685776.

The previous prime is 65134423. The next prime is 65134439. The reversal of 65134431 is 13443156.

65134431 is a `hidden beast` number, since 651 + 3 + 4 + 4 + 3 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (65134423) and next prime (65134439).

It is not a de Polignac number, because 65134431 - 2³ = 65134423 is a prime.

It is a super-2 number, since 2×65134431² = 8484988203387522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65134395 and 65134404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65134439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 230016 + ... + 230298.

It is an arithmetic number, because the mean of its divisors is an integer number (3987360).

Almost surely, 2^65134431 is an apocalyptic number.

65134431 is a deficient number, since it is larger than the sum of its proper divisors (30562209).

65134431 is a wasteful number, since it uses less digits than its factorization.

65134431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 632 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 65134431 is about 8070.5904988421. The cubic root of 65134431 is about 402.3495696998.

Adding to 65134431 its reverse (13443156), we get a palindrome (78577587).

The spelling of 65134431 in words is "sixty-five million, one hundred thirty-four thousand, four hundred thirty-one".