131233436023 has 4 divisors (see below), whose sum is σ = 131796669888. Its totient is φ = 130670202160.

The previous prime is 131233436003. The next prime is 131233436029. The reversal of 131233436023 is 320634332131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320634332131 = 10433 ⋅30732707.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131233436023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131233436029) 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, 281616583 + ... + 281617048.

It is an arithmetic number, because the mean of its divisors is an integer number (32949167472).

Almost surely, 2^131233436023 is an apocalyptic number.

131233436023 is a deficient number, since it is larger than the sum of its proper divisors (563233865).

131233436023 is an equidigital number, since it uses as much as digits as its factorization.

131233436023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563233864.

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 131233436023 its reverse (320634332131), we get a palindrome (451867768154).

The spelling of 131233436023 in words is "one hundred thirty-one billion, two hundred thirty-three million, four hundred thirty-six thousand, twenty-three".