131405130 has 48 divisors (see below), whose sum is σ = 350896104. Its totient is φ = 34093440.

The previous prime is 131405117. The next prime is 131405137. The reversal of 131405130 is 31504131.

131405130 is a `hidden beast` number, since 13 + 140 + 513 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 117094041 + 14311089 = 10821^2 + 3783^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (131405137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16401 + ... + 23060.

Almost surely, 2^131405130 is an apocalyptic number.

131405130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131405130 is an abundant number, since it is smaller than the sum of its proper divisors (219490974).

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

131405130 is a wasteful number, since it uses less digits than its factorization.

131405130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39511 (or 39508 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 131405130 is about 11463.2076662686. The cubic root of 131405130 is about 508.3983199785.

Adding to 131405130 its reverse (31504131), we get a palindrome (162909261).

Subtracting from 131405130 its reverse (31504131), we obtain a palindrome (99900999).

The spelling of 131405130 in words is "one hundred thirty-one million, four hundred five thousand, one hundred thirty".