103211131 has 4 divisors (see below), whose sum is σ = 109282392. Its totient is φ = 97139872.

The previous prime is 103211117. The next prime is 103211153. The reversal of 103211131 is 131112301.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103211131 is a prime.

It is a super-2 number, since 2×103211131² = 21305075124598322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (103211231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3035605 + ... + 3035638.

It is an arithmetic number, because the mean of its divisors is an integer number (27320598).

Almost surely, 2^103211131 is an apocalyptic number.

103211131 is a deficient number, since it is larger than the sum of its proper divisors (6071261).

103211131 is an equidigital number, since it uses as much as digits as its factorization.

103211131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6071260.

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

The square root of 103211131 is about 10159.2879179596. The cubic root of 103211131 is about 469.0748831381.

Adding to 103211131 its reverse (131112301), we get a palindrome (234323432).

The spelling of 103211131 in words is "one hundred three million, two hundred eleven thousand, one hundred thirty-one".