131033810 has 16 divisors (see below), whose sum is σ = 238512600. Its totient is φ = 51824256.

The previous prime is 131033801. The next prime is 131033813. The reversal of 131033810 is 18330131.

It is a happy number.

It is a Cunningham number, because it is equal to 11447²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 103774969 + 27258841 = 10187^2 + 5221^2 .

It is a super-2 number, since 2×131033810² = 34339718726232200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131033813) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 72725 + ... + 74504.

Almost surely, 2^131033810 is an apocalyptic number.

131033810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131033810 is a deficient number, since it is larger than the sum of its proper divisors (107478790).

131033810 is a wasteful number, since it uses less digits than its factorization.

131033810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147325.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 131033810 is about 11447.0000436796. Note that the first 4 decimals coincide. The cubic root of 131033810 is about 507.9189968390.

Adding to 131033810 its reverse (18330131), we get a palindrome (149363941).

The spelling of 131033810 in words is "one hundred thirty-one million, thirty-three thousand, eight hundred ten".