100431143661 has 16 divisors (see below), whose sum is σ = 141819747264. Its totient is φ = 63000240384.

The previous prime is 100431143653. The next prime is 100431143663. The reversal of 100431143661 is 166341134001.

It is not a de Polignac number, because 100431143661 - 2³ = 100431143653 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100431143663) 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, 27451 + ... + 449016.

It is an arithmetic number, because the mean of its divisors is an integer number (8863734204).

Almost surely, 2^100431143661 is an apocalyptic number.

It is an amenable number.

100431143661 is a deficient number, since it is larger than the sum of its proper divisors (41388603603).

100431143661 is a wasteful number, since it uses less digits than its factorization.

100431143661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480620.

The product of its (nonzero) digits is 5184, while the sum is 30.

Adding to 100431143661 its reverse (166341134001), we get a palindrome (266772277662).

The spelling of 100431143661 in words is "one hundred billion, four hundred thirty-one million, one hundred forty-three thousand, six hundred sixty-one".