131022563 has 4 divisors (see below), whose sum is σ = 149740080. Its totient is φ = 112305048.

The previous prime is 131022547. The next prime is 131022581. The reversal of 131022563 is 365220131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131022563 - 2⁴ = 131022547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131022503) 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 3 ways as a sum of consecutive naturals, for example, 9358748 + ... + 9358761.

It is an arithmetic number, because the mean of its divisors is an integer number (37435020).

Almost surely, 2^131022563 is an apocalyptic number.

131022563 is a deficient number, since it is larger than the sum of its proper divisors (18717517).

131022563 is an equidigital number, since it uses as much as digits as its factorization.

131022563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18717516.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 131022563 is about 11446.5087690527. The cubic root of 131022563 is about 507.9044643851.

Adding to 131022563 its reverse (365220131), we get a palindrome (496242694).

The spelling of 131022563 in words is "one hundred thirty-one million, twenty-two thousand, five hundred sixty-three".