131855530 has 8 divisors (see below), whose sum is σ = 237339972. Its totient is φ = 52742208.

The previous prime is 131855473. The next prime is 131855533. The reversal of 131855530 is 35558131.

It can be written as a sum of positive squares in 2 ways, for example, as 128754409 + 3101121 = 11347^2 + 1761^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 131855492 and 131855501.

It is not an unprimeable number, because it can be changed into a prime (131855533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6592767 + ... + 6592786.

Almost surely, 2^131855530 is an apocalyptic number.

131855530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131855530 is a deficient number, since it is larger than the sum of its proper divisors (105484442).

131855530 is a wasteful number, since it uses less digits than its factorization.

131855530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13185560.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 131855530 is about 11482.8363220939. The cubic root of 131855530 is about 508.9785141778.

The spelling of 131855530 in words is "one hundred thirty-one million, eight hundred fifty-five thousand, five hundred thirty".