146135631 has 16 divisors (see below), whose sum is σ = 205783040. Its totient is φ = 91990080.

The previous prime is 146135623. The next prime is 146135651. The reversal of 146135631 is 136531641.

It is not a de Polignac number, because 146135631 - 2³ = 146135623 is a prime.

It is a super-3 number, since 3×146135631³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146135651) 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, 13746 + ... + 21936.

It is an arithmetic number, because the mean of its divisors is an integer number (12861440).

Almost surely, 2^146135631 is an apocalyptic number.

146135631 is a deficient number, since it is larger than the sum of its proper divisors (59647409).

146135631 is a wasteful number, since it uses less digits than its factorization.

146135631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8526.

The product of its digits is 6480, while the sum is 30.

The square root of 146135631 is about 12088.6571214507. The cubic root of 146135631 is about 526.7267479838.

The spelling of 146135631 in words is "one hundred forty-six million, one hundred thirty-five thousand, six hundred thirty-one".