100215131 has 8 divisors (see below), whose sum is σ = 102643728. Its totient is φ = 97812000.

The previous prime is 100215127. The next prime is 100215149. The reversal of 100215131 is 131512001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100215131 - 2² = 100215127 is a prime.

It is a super-2 number, since 2×100215131² = 20086144962694322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100215121) 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, 1721 + ... + 14261.

It is an arithmetic number, because the mean of its divisors is an integer number (12830466).

Almost surely, 2^100215131 is an apocalyptic number.

100215131 is a deficient number, since it is larger than the sum of its proper divisors (2428597).

100215131 is a wasteful number, since it uses less digits than its factorization.

100215131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12733.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 100215131 is about 10010.7507710461. The cubic root of 100215131 is about 464.4914948408.

Adding to 100215131 its reverse (131512001), we get a palindrome (231727132).

The spelling of 100215131 in words is "one hundred million, two hundred fifteen thousand, one hundred thirty-one".