131121106 has 8 divisors (see below), whose sum is σ = 197768844. Its totient is φ = 65198160.

The previous prime is 131121031. The next prime is 131121113. The reversal of 131121106 is 601121131.

It can be written as a sum of positive squares in 2 ways, for example, as 74736025 + 56385081 = 8645^2 + 7509^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 131121106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180745 + ... + 181468.

Almost surely, 2^131121106 is an apocalyptic number.

131121106 is a deficient number, since it is larger than the sum of its proper divisors (66647738).

131121106 is a wasteful number, since it uses less digits than its factorization.

131121106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362396.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 131121106 is about 11450.8124602580. The cubic root of 131121106 is about 508.0317653272.

Adding to 131121106 its reverse (601121131), we get a palindrome (732242237).

The spelling of 131121106 in words is "one hundred thirty-one million, one hundred twenty-one thousand, one hundred six".