131116623 has 32 divisors (see below), whose sum is σ = 195581952. Its totient is φ = 77464800.

The previous prime is 131116619. The next prime is 131116637. The reversal of 131116623 is 326611131.

It is not a de Polignac number, because 131116623 - 2² = 131116619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131116593 and 131116602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131116693) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250440 + ... + 250962.

It is an arithmetic number, because the mean of its divisors is an integer number (6111936).

Almost surely, 2^131116623 is an apocalyptic number.

131116623 is a deficient number, since it is larger than the sum of its proper divisors (64465329).

131116623 is a wasteful number, since it uses less digits than its factorization.

131116623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715.

The product of its digits is 648, while the sum is 24.

The square root of 131116623 is about 11450.6167082826. The cubic root of 131116623 is about 508.0259754321.

Adding to 131116623 its reverse (326611131), we get a palindrome (457727754).

The spelling of 131116623 in words is "one hundred thirty-one million, one hundred sixteen thousand, six hundred twenty-three".