131001021663 has 16 divisors (see below), whose sum is σ = 174926394240. Its totient is φ = 87204927456.

The previous prime is 131001021631. The next prime is 131001021691. The reversal of 131001021663 is 366120100131.

It is not a de Polignac number, because 131001021663 - 2⁵ = 131001021631 is a prime.

It is a super-2 number, since 2×131001021663² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131002021663) 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, 6245848 + ... + 6266786.

It is an arithmetic number, because the mean of its divisors is an integer number (10932899640).

Almost surely, 2^131001021663 is an apocalyptic number.

131001021663 is a deficient number, since it is larger than the sum of its proper divisors (43925372577).

131001021663 is a wasteful number, since it uses less digits than its factorization.

131001021663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23926.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 131001021663 its reverse (366120100131), we get a palindrome (497121121794).

The spelling of 131001021663 in words is "one hundred thirty-one billion, one million, twenty-one thousand, six hundred sixty-three".