201461635531 has 16 divisors (see below), whose sum is σ = 229738124448. Its totient is φ = 175012416000.

The previous prime is 201461635523. The next prime is 201461635537. The reversal of 201461635531 is 135536164102.

201461635531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201461635531 - 2³ = 201461635523 is a prime.

It is a super-2 number, since 2×201461635531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201461635537) 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 15 ways as a sum of consecutive naturals, for example, 4019616 + ... + 4069426.

It is an arithmetic number, because the mean of its divisors is an integer number (14358632778).

Almost surely, 2^201461635531 is an apocalyptic number.

201461635531 is a deficient number, since it is larger than the sum of its proper divisors (28276488917).

201461635531 is a wasteful number, since it uses less digits than its factorization.

201461635531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68142.

The product of its (nonzero) digits is 64800, while the sum is 37.

Adding to 201461635531 its reverse (135536164102), we get a palindrome (336997799633).

The spelling of 201461635531 in words is "two hundred one billion, four hundred sixty-one million, six hundred thirty-five thousand, five hundred thirty-one".