131520207 has 32 divisors (see below), whose sum is σ = 216832000. Its totient is φ = 69050880.

The previous prime is 131520203. The next prime is 131520217. The reversal of 131520207 is 702025131.

It is not a de Polignac number, because 131520207 - 2² = 131520203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131520203) 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 31 ways as a sum of consecutive naturals, for example, 64794 + ... + 66792.

It is an arithmetic number, because the mean of its divisors is an integer number (6776000).

Almost surely, 2^131520207 is an apocalyptic number.

131520207 is a deficient number, since it is larger than the sum of its proper divisors (85311793).

131520207 is a wasteful number, since it uses less digits than its factorization.

131520207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 131520207 is about 11468.2259744042. The cubic root of 131520207 is about 508.5466852753.

Adding to 131520207 its reverse (702025131), we get a palindrome (833545338).

The spelling of 131520207 in words is "one hundred thirty-one million, five hundred twenty thousand, two hundred seven".