213101131 has 8 divisors (see below), whose sum is σ = 224678720. Its totient is φ = 201559752.

The previous prime is 213101123. The next prime is 213101153. The reversal of 213101131 is 131101312.

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

It is not a de Polignac number, because 213101131 - 2³ = 213101123 is a prime.

It is a super-2 number, since 2×213101131² = 90824184066958322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213105131) 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, 3496 + ... + 20938.

It is an arithmetic number, because the mean of its divisors is an integer number (28084840).

Almost surely, 2^213101131 is an apocalyptic number.

213101131 is a deficient number, since it is larger than the sum of its proper divisors (11577589).

213101131 is a wasteful number, since it uses less digits than its factorization.

213101131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18105.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 213101131 is about 14597.9837991416. The cubic root of 213101131 is about 597.3037640387.

Adding to 213101131 its reverse (131101312), we get a palindrome (344202443).

The spelling of 213101131 in words is "two hundred thirteen million, one hundred one thousand, one hundred thirty-one".