131223123322 has 4 divisors (see below), whose sum is σ = 196834684986. Its totient is φ = 65611561660.

The previous prime is 131223123319. The next prime is 131223123359. The reversal of 131223123322 is 223321322131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 223321322131 = 419 ⋅532986449.

It can be written as a sum of positive squares in only one way, i.e., 102938947281 + 28284176041 = 320841^2 + 168179^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32805780829 + ... + 32805780832.

Almost surely, 2^131223123322 is an apocalyptic number.

131223123322 is a deficient number, since it is larger than the sum of its proper divisors (65611561664).

131223123322 is an equidigital number, since it uses as much as digits as its factorization.

131223123322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65611561663.

The product of its digits is 2592, while the sum is 25.

Adding to 131223123322 its reverse (223321322131), we get a palindrome (354544445453).

The spelling of 131223123322 in words is "one hundred thirty-one billion, two hundred twenty-three million, one hundred twenty-three thousand, three hundred twenty-two".