131233623 has 4 divisors (see below), whose sum is σ = 174978168. Its totient is φ = 87489080.

The previous prime is 131233621. The next prime is 131233673. The reversal of 131233623 is 326332131.

It is a happy number.

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 131233623 - 2¹ = 131233621 is a prime.

It is a super-2 number, since 2×131233623² = 34444527611412258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131233593 and 131233602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131233621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21872268 + ... + 21872273.

It is an arithmetic number, because the mean of its divisors is an integer number (43744542).

Almost surely, 2^131233623 is an apocalyptic number.

131233623 is a deficient number, since it is larger than the sum of its proper divisors (43744545).

131233623 is an equidigital number, since it uses as much as digits as its factorization.

131233623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43744544.

The product of its digits is 1944, while the sum is 24.

The square root of 131233623 is about 11455.7244642144. The cubic root of 131233623 is about 508.1770403560.

Adding to 131233623 its reverse (326332131), we get a palindrome (457565754).

The spelling of 131233623 in words is "one hundred thirty-one million, two hundred thirty-three thousand, six hundred twenty-three".