131240322 has 12 divisors (see below), whose sum is σ = 284354070. Its totient is φ = 43746768.

The previous prime is 131240299. The next prime is 131240371. The reversal of 131240322 is 223042131.

It can be written as a sum of positive squares in only one way, i.e., 131125401 + 114921 = 11451^2 + 339^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 7291129 = 131240322 / (1 + 3 + 1 + 2 + 4 + 0 + 3 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 131240295 and 131240304.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3645547 + ... + 3645582.

Almost surely, 2^131240322 is an apocalyptic number.

131240322 is an abundant number, since it is smaller than the sum of its proper divisors (153113748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131240322 is a wasteful number, since it uses less digits than its factorization.

131240322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7291137 (or 7291134 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 131240322 is about 11456.0168470547. The cubic root of 131240322 is about 508.1856870732.

Adding to 131240322 its reverse (223042131), we get a palindrome (354282453).

The spelling of 131240322 in words is "one hundred thirty-one million, two hundred forty thousand, three hundred twenty-two".