100631801000 has 32 divisors (see below), whose sum is σ = 235478416680. Its totient is φ = 40252720000.

The previous prime is 100631800961. The next prime is 100631801009. The reversal of 100631801000 is 108136001.

It can be written as a sum of positive squares in 4 ways, for example, as 48462500164 + 52169300836 = 220142^2 + 228406^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (100631801009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50314901 + ... + 50316900.

Almost surely, 2^100631801000 is an apocalyptic number.

100631801000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100631801000 is an abundant number, since it is smaller than the sum of its proper divisors (134846615680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100631801000 is a wasteful number, since it uses less digits than its factorization.

100631801000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100631822 (or 100631808 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 100631801000 its reverse (108136001), we get a palindrome (100739937001).

The spelling of 100631801000 in words is "one hundred billion, six hundred thirty-one million, eight hundred one thousand".