131223321302 has 4 divisors (see below), whose sum is σ = 196834981956. Its totient is φ = 65611660650.

The previous prime is 131223321241. The next prime is 131223321347. The reversal of 131223321302 is 203123322131.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32805830324 + ... + 32805830327.

It is an arithmetic number, because the mean of its divisors is an integer number (49208745489).

Almost surely, 2^131223321302 is an apocalyptic number.

131223321302 is a deficient number, since it is larger than the sum of its proper divisors (65611660654).

131223321302 is an equidigital number, since it uses as much as digits as its factorization.

131223321302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65611660653.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 131223321302 its reverse (203123322131), we get a palindrome (334346643433).

The spelling of 131223321302 in words is "one hundred thirty-one billion, two hundred twenty-three million, three hundred twenty-one thousand, three hundred two".