131121206 has 8 divisors (see below), whose sum is σ = 205233264. Its totient is φ = 62710120.

The previous prime is 131121181. The next prime is 131121241. The reversal of 131121206 is 602121131.

131121206 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1425185 + ... + 1425276.

It is an arithmetic number, because the mean of its divisors is an integer number (25654158).

Almost surely, 2^131121206 is an apocalyptic number.

131121206 is a deficient number, since it is larger than the sum of its proper divisors (74112058).

131121206 is a wasteful number, since it uses less digits than its factorization.

131121206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850486.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 131121206 is about 11450.8168267596. The cubic root of 131121206 is about 508.0318944779.

Adding to 131121206 its reverse (602121131), we get a palindrome (733242337).

The spelling of 131121206 in words is "one hundred thirty-one million, one hundred twenty-one thousand, two hundred six".