131421140 has 12 divisors (see below), whose sum is σ = 275984436. Its totient is φ = 52568448.

The previous prime is 131421109. The next prime is 131421197. The reversal of 131421140 is 41124131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24960016 + 106461124 = 4996^2 + 10318^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3285509 + ... + 3285548.

It is an arithmetic number, because the mean of its divisors is an integer number (22998703).

Almost surely, 2^131421140 is an apocalyptic number.

131421140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131421140 is an abundant number, since it is smaller than the sum of its proper divisors (144563296).

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

131421140 is a wasteful number, since it uses less digits than its factorization.

131421140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6571066 (or 6571064 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 131421140 is about 11463.9059661182. The cubic root of 131421140 is about 508.4189663732.

Adding to 131421140 its reverse (41124131), we get a palindrome (172545271).

The spelling of 131421140 in words is "one hundred thirty-one million, four hundred twenty-one thousand, one hundred forty".