131644330 has 16 divisors (see below), whose sum is σ = 237422304. Its totient is φ = 52554960.

The previous prime is 131644319. The next prime is 131644349. The reversal of 131644330 is 33446131.

It is a happy number.

It is a super-2 number, since 2×131644330² = 34660459242297800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131644295 and 131644304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7356 + ... + 17815.

It is an arithmetic number, because the mean of its divisors is an integer number (14838894).

Almost surely, 2^131644330 is an apocalyptic number.

131644330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131644330 is a deficient number, since it is larger than the sum of its proper divisors (105777974).

131644330 is a wasteful number, since it uses less digits than its factorization.

131644330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25701.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 131644330 is about 11473.6363024108. The cubic root of 131644330 is about 508.7066163224.

The spelling of 131644330 in words is "one hundred thirty-one million, six hundred forty-four thousand, three hundred thirty".