213102131 has 8 divisors (see below), whose sum is σ = 232609728. Its totient is φ = 193617000.

The previous prime is 213102079. The next prime is 213102139. The reversal of 213102131 is 131201312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213102131 is a prime.

It is a super-2 number, since 2×213102131² = 90825036473482322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213102139) 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, 18896 + ... + 27986.

It is an arithmetic number, because the mean of its divisors is an integer number (29076216).

Almost surely, 2^213102131 is an apocalyptic number.

213102131 is a deficient number, since it is larger than the sum of its proper divisors (19507597).

213102131 is a wasteful number, since it uses less digits than its factorization.

213102131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11233.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 213102131 is about 14598.0180504067. The cubic root of 213102131 is about 597.3046983413.

Adding to 213102131 its reverse (131201312), we get a palindrome (344303443).

The spelling of 213102131 in words is "two hundred thirteen million, one hundred two thousand, one hundred thirty-one".