133463631 has 16 divisors (see below), whose sum is σ = 204224768. Its totient is φ = 75945600.

The previous prime is 133463611. The next prime is 133463639. The reversal of 133463631 is 136364331.

It is not a de Polignac number, because 133463631 - 2⁹ = 133463119 is a prime.

It is a super-2 number, since 2×133463631² = 35625081599408322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133463639) 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, 8125 + ... + 18246.

It is an arithmetic number, because the mean of its divisors is an integer number (12764048).

Almost surely, 2^133463631 is an apocalyptic number.

133463631 is a deficient number, since it is larger than the sum of its proper divisors (70761137).

133463631 is a wasteful number, since it uses less digits than its factorization.

133463631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26622.

The product of its digits is 11664, while the sum is 30.

The square root of 133463631 is about 11552.6460605352. The cubic root of 133463631 is about 511.0393146351.

The spelling of 133463631 in words is "one hundred thirty-three million, four hundred sixty-three thousand, six hundred thirty-one".