101131806 has 16 divisors (see below), whose sum is σ = 202376448. Its totient is φ = 33691800.

The previous prime is 101131801. The next prime is 101131819. The reversal of 101131806 is 608131101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101131801) 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, 10971 + ... + 17961.

It is an arithmetic number, because the mean of its divisors is an integer number (12648528).

Almost surely, 2^101131806 is an apocalyptic number.

101131806 is an abundant number, since it is smaller than the sum of its proper divisors (101244642).

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

101131806 is a wasteful number, since it uses less digits than its factorization.

101131806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9407.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 101131806 is about 10056.4310766792. The cubic root of 101131806 is about 465.9034441712.

Adding to 101131806 its reverse (608131101), we get a palindrome (709262907).

The spelling of 101131806 in words is "one hundred one million, one hundred thirty-one thousand, eight hundred six".