131020111130 has 32 divisors (see below), whose sum is σ = 238505806800. Its totient is φ = 51817070592.

The previous prime is 131020111121. The next prime is 131020111151. The reversal of 131020111130 is 31111020131.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 51031261801 + 79988849329 = 225901^2 + 282823^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 320426 + ... + 603914.

Almost surely, 2^131020111130 is an apocalyptic number.

131020111130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131020111130 is a deficient number, since it is larger than the sum of its proper divisors (107485695670).

131020111130 is a wasteful number, since it uses less digits than its factorization.

131020111130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284018.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 131020111130 its reverse (31111020131), we get a palindrome (162131131261).

Subtracting from 131020111130 its reverse (31111020131), we obtain a palindrome (99909090999).

The spelling of 131020111130 in words is "one hundred thirty-one billion, twenty million, one hundred eleven thousand, one hundred thirty".