131121030 has 32 divisors (see below), whose sum is σ = 318232800. Its totient is φ = 34572032.

The previous prime is 131120989. The next prime is 131121031. The reversal of 131121030 is 30121131.

It is a junction number, because it is equal to n+sod(n) for n = 131120997 and 131121015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131121031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21885 + ... + 27224.

It is an arithmetic number, because the mean of its divisors is an integer number (9944775).

Almost surely, 2^131121030 is an apocalyptic number.

131121030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131121030 is an abundant number, since it is smaller than the sum of its proper divisors (187111770).

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

131121030 is a wasteful number, since it uses less digits than its factorization.

131121030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49208.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 131121030 is about 11450.8091417157. The cubic root of 131121030 is about 508.0316671726.

Adding to 131121030 its reverse (30121131), we get a palindrome (161242161).

The spelling of 131121030 in words is "one hundred thirty-one million, one hundred twenty-one thousand, thirty".