131033213123 has 4 divisors (see below), whose sum is σ = 132878751408. Its totient is φ = 129187674840.

The previous prime is 131033213117. The next prime is 131033213137. The reversal of 131033213123 is 321312330131.

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 131033213123 - 2²⁶ = 130966104259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131033213023) 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, 922769036 + ... + 922769177.

It is an arithmetic number, because the mean of its divisors is an integer number (33219687852).

Almost surely, 2^131033213123 is an apocalyptic number.

131033213123 is a deficient number, since it is larger than the sum of its proper divisors (1845538285).

131033213123 is an equidigital number, since it uses as much as digits as its factorization.

131033213123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845538284.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 131033213123 its reverse (321312330131), we get a palindrome (452345543254).

The spelling of 131033213123 in words is "one hundred thirty-one billion, thirty-three million, two hundred thirteen thousand, one hundred twenty-three".