131121130 has 16 divisors (see below), whose sum is σ = 269735040. Its totient is φ = 44955792.

The previous prime is 131121127. The next prime is 131121131. The reversal of 131121130 is 31121131.

It is a self number, because there is not a number n which added to its sum of digits gives 131121130.

It is not an unprimeable number, because it can be changed into a prime (131121131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 936510 + ... + 936649.

It is an arithmetic number, because the mean of its divisors is an integer number (16858440).

Almost surely, 2^131121130 is an apocalyptic number.

131121130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131121130 is an abundant number, since it is smaller than the sum of its proper divisors (138613910).

131121130 is a wasteful number, since it uses less digits than its factorization.

131121130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1873173.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 131121130 is about 11450.8135082185. The cubic root of 131121130 is about 508.0317963234.

Adding to 131121130 its reverse (31121131), we get a palindrome (162242261).

Subtracting from 131121130 its reverse (31121131), we obtain a palindrome (99999999).

The spelling of 131121130 in words is "one hundred thirty-one million, one hundred twenty-one thousand, one hundred thirty".