131009146 has 8 divisors (see below), whose sum is σ = 199844640. Its totient is φ = 64394268.

The previous prime is 131009141. The next prime is 131009167. The reversal of 131009146 is 641900131.

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

It is a self number, because there is not a number n which added to its sum of digits gives 131009146.

It is not an unprimeable number, because it can be changed into a prime (131009141) 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, 555006 + ... + 555241.

It is an arithmetic number, because the mean of its divisors is an integer number (24980580).

Almost surely, 2^131009146 is an apocalyptic number.

131009146 is a deficient number, since it is larger than the sum of its proper divisors (68835494).

131009146 is a wasteful number, since it uses less digits than its factorization.

131009146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110308.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 131009146 is about 11445.9226801512. The cubic root of 131009146 is about 507.8871269468.

Adding to 131009146 its reverse (641900131), we get a palindrome (772909277).

The spelling of 131009146 in words is "one hundred thirty-one million, nine thousand, one hundred forty-six".