131501315 has 16 divisors (see below), whose sum is σ = 172820736. Its totient is φ = 95263200.

The previous prime is 131501303. The next prime is 131501333. The reversal of 131501315 is 513105131.

It is a de Polignac number, because none of the positive numbers 2^k-131501315 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9920 + ... + 19010.

It is an arithmetic number, because the mean of its divisors is an integer number (10801296).

Almost surely, 2^131501315 is an apocalyptic number.

131501315 is a deficient number, since it is larger than the sum of its proper divisors (41319421).

131501315 is a wasteful number, since it uses less digits than its factorization.

131501315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9370.

The product of its (nonzero) digits is 225, while the sum is 20.

The square root of 131501315 is about 11467.4022777611. The cubic root of 131501315 is about 508.5223343302.

Adding to 131501315 its reverse (513105131), we get a palindrome (644606446).

The spelling of 131501315 in words is "one hundred thirty-one million, five hundred one thousand, three hundred fifteen".