201631254463 has 16 divisors (see below), whose sum is σ = 215340618240. Its totient is φ = 188335867104.

The previous prime is 201631254413. The next prime is 201631254479. The reversal of 201631254463 is 364452136102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201631254463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201631254413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4738878 + ... + 4781236.

It is an arithmetic number, because the mean of its divisors is an integer number (13458788640).

Almost surely, 2^201631254463 is an apocalyptic number.

201631254463 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

201631254463 is a deficient number, since it is larger than the sum of its proper divisors (13709363777).

201631254463 is a wasteful number, since it uses less digits than its factorization.

201631254463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47238.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 201631254463 in words is "two hundred one billion, six hundred thirty-one million, two hundred fifty-four thousand, four hundred sixty-three".