134621631531 has 40 divisors (see below), whose sum is σ = 205872691200. Its totient is φ = 87620360688.

The previous prime is 134621631509. The next prime is 134621631533. The reversal of 134621631531 is 135136126431.

134621631531 is a `hidden beast` number, since 1 + 3 + 4 + 62 + 1 + 63 + 1 + 531 = 666.

It is not a de Polignac number, because 134621631531 - 2³⁵ = 100261893163 is a prime.

It is a super-2 number, since 2×134621631531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (134621631533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8849670 + ... + 8864868.

It is an arithmetic number, because the mean of its divisors is an integer number (5146817280).

Almost surely, 2^134621631531 is an apocalyptic number.

134621631531 is a deficient number, since it is larger than the sum of its proper divisors (71251059669).

134621631531 is a wasteful number, since it uses less digits than its factorization.

134621631531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17797 (or 17788 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

Adding to 134621631531 its reverse (135136126431), we get a palindrome (269757757962).

The spelling of 134621631531 in words is "one hundred thirty-four billion, six hundred twenty-one million, six hundred thirty-one thousand, five hundred thirty-one".