131203563 has 16 divisors (see below), whose sum is σ = 182347776. Its totient is φ = 83819520.

The previous prime is 131203561. The next prime is 131203577. The reversal of 131203563 is 365302131.

It is a happy number.

It is not a de Polignac number, because 131203563 - 2¹ = 131203561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131203561) 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, 2731 + ... + 16427.

It is an arithmetic number, because the mean of its divisors is an integer number (11396736).

Almost surely, 2^131203563 is an apocalyptic number.

131203563 is a deficient number, since it is larger than the sum of its proper divisors (51144213).

131203563 is a wasteful number, since it uses less digits than its factorization.

131203563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13834.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 131203563 is about 11454.4123812616. The cubic root of 131203563 is about 508.1382368645.

Adding to 131203563 its reverse (365302131), we get a palindrome (496505694).

It can be divided in two parts, 13 and 1203563, that added together give a triangular number (1203576 = T₁₅₅₁).

The spelling of 131203563 in words is "one hundred thirty-one million, two hundred three thousand, five hundred sixty-three".