131031332 has 12 divisors (see below), whose sum is σ = 229546380. Its totient is φ = 65446656.

The previous prime is 131031301. The next prime is 131031337. The reversal of 131031332 is 233130131.

It can be written as a sum of positive squares in 2 ways, for example, as 104980516 + 26050816 = 10246^2 + 5104^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 131031332.

It is not an unprimeable number, because it can be changed into a prime (131031337) 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, 12857 + ... + 20672.

It is an arithmetic number, because the mean of its divisors is an integer number (19128865).

Almost surely, 2^131031332 is an apocalyptic number.

It is an amenable number.

131031332 is a deficient number, since it is larger than the sum of its proper divisors (98515048).

131031332 is a wasteful number, since it uses less digits than its factorization.

131031332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34510 (or 34508 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 131031332 is about 11446.8918052020. The cubic root of 131031332 is about 507.9157950414.

Adding to 131031332 its reverse (233130131), we get a palindrome (364161463).

The spelling of 131031332 in words is "one hundred thirty-one million, thirty-one thousand, three hundred thirty-two".