131225315 has 8 divisors (see below), whose sum is σ = 169583568. Its totient is φ = 96904800.

The previous prime is 131225309. The next prime is 131225317. The reversal of 131225315 is 513522131.

It is a happy number.

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

It is not a de Polignac number, because 131225315 - 2⁴ = 131225299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131225317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1009361 + ... + 1009490.

It is an arithmetic number, because the mean of its divisors is an integer number (21197946).

Almost surely, 2^131225315 is an apocalyptic number.

131225315 is a deficient number, since it is larger than the sum of its proper divisors (38358253).

131225315 is a wasteful number, since it uses less digits than its factorization.

131225315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018869.

The product of its digits is 900, while the sum is 23.

The square root of 131225315 is about 11455.3618450052. The cubic root of 131225315 is about 508.1663164174.

Adding to 131225315 its reverse (513522131), we get a palindrome (644747446).

The spelling of 131225315 in words is "one hundred thirty-one million, two hundred twenty-five thousand, three hundred fifteen".