131001505 has 16 divisors (see below), whose sum is σ = 162860544. Its totient is φ = 101053440.

The previous prime is 131001499. The next prime is 131001509. The reversal of 131001505 is 505100131.

It is not a de Polignac number, because 131001505 - 2¹⁵ = 130968737 is a prime.

It is a super-2 number, since 2×131001505² = 34322788624530050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131001509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46209 + ... + 48961.

It is an arithmetic number, because the mean of its divisors is an integer number (10178784).

Almost surely, 2^131001505 is an apocalyptic number.

It is an amenable number.

131001505 is a deficient number, since it is larger than the sum of its proper divisors (31859039).

131001505 is a wasteful number, since it uses less digits than its factorization.

131001505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3096.

The product of its (nonzero) digits is 75, while the sum is 16.

The square root of 131001505 is about 11445.5888883010. The cubic root of 131001505 is about 507.8772527227.

Adding to 131001505 its reverse (505100131), we get a palindrome (636101636).

The spelling of 131001505 in words is "one hundred thirty-one million, one thousand, five hundred five".