131243122 has 8 divisors (see below), whose sum is σ = 196940016. Its totient is φ = 65596452.

The previous prime is 131243117. The next prime is 131243141. The reversal of 131243122 is 221342131.

It is a happy number.

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 131243122.

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, 5148 + ... + 16999.

It is an arithmetic number, because the mean of its divisors is an integer number (24617502).

Almost surely, 2^131243122 is an apocalyptic number.

131243122 is a deficient number, since it is larger than the sum of its proper divisors (65696894).

131243122 is a wasteful number, since it uses less digits than its factorization.

131243122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25112.

The product of its digits is 288, while the sum is 19.

The square root of 131243122 is about 11456.1390529270. The cubic root of 131243122 is about 508.1893010788.

Adding to 131243122 its reverse (221342131), we get a palindrome (352585253).

Subtracting 131243122 from its reverse (221342131), we obtain a palindrome (90099009).

It can be divided in two parts, 131 and 243122, that added together give a triangular number (243253 = T₆₉₇).

The spelling of 131243122 in words is "one hundred thirty-one million, two hundred forty-three thousand, one hundred twenty-two".