131456245 has 8 divisors (see below), whose sum is σ = 157809240. Its totient is φ = 105123840.

The previous prime is 131456233. The next prime is 131456249. The reversal of 131456245 is 542654131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3721041 + 127735204 = 1929^2 + 11302^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-131456245 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131456249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20821 + ... + 26389.

It is an arithmetic number, because the mean of its divisors is an integer number (19726155).

Almost surely, 2^131456245 is an apocalyptic number.

It is an amenable number.

131456245 is a deficient number, since it is larger than the sum of its proper divisors (26352995).

131456245 is an equidigital number, since it uses as much as digits as its factorization.

131456245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10295.

The product of its digits is 14400, while the sum is 31.

The square root of 131456245 is about 11465.4369737921. The cubic root of 131456245 is about 508.4642316907.

The spelling of 131456245 in words is "one hundred thirty-one million, four hundred fifty-six thousand, two hundred forty-five".