101531533100 has 144 divisors (see below), whose sum is σ = 234178761600. Its totient is φ = 38102400000.

The previous prime is 101531533079. The next prime is 101531533231. The reversal of 101531533100 is 1335135101.

It is a super-2 number, since 2×101531533100² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 100625396 + ... + 100626404.

It is an arithmetic number, because the mean of its divisors is an integer number (1626241400).

Almost surely, 2^101531533100 is an apocalyptic number.

101531533100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101531533100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117089380800).

101531533100 is an abundant number, since it is smaller than the sum of its proper divisors (132647228500).

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

101531533100 is a wasteful number, since it uses less digits than its factorization.

101531533100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504 (or 1497 counting only the distinct ones).

The product of its (nonzero) digits is 675, while the sum is 23.

Adding to 101531533100 its reverse (1335135101), we get a palindrome (102866668201).

The spelling of 101531533100 in words is "one hundred one billion, five hundred thirty-one million, five hundred thirty-three thousand, one hundred".