131244330 has 32 divisors (see below), whose sum is σ = 359985024. Its totient is φ = 29998656.

The previous prime is 131244329. The next prime is 131244361. The reversal of 131244330 is 33442131.

131244330 = T₅₃₉₆ + T₅₃₉₇ + ... + T₅₄₀₄.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 131244297 and 131244306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312277 + ... + 312696.

It is an arithmetic number, because the mean of its divisors is an integer number (11249532).

Almost surely, 2^131244330 is an apocalyptic number.

131244330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131244330 is an abundant number, since it is smaller than the sum of its proper divisors (228740694).

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

131244330 is a wasteful number, since it uses less digits than its factorization.

131244330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624990.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 131244330 is about 11456.1917756295. The cubic root of 131244330 is about 508.1908602483.

Adding to 131244330 its reverse (33442131), we get a palindrome (164686461).

The spelling of 131244330 in words is "one hundred thirty-one million, two hundred forty-four thousand, three hundred thirty".