131023111202 has 4 divisors (see below), whose sum is σ = 196534666806. Its totient is φ = 65511555600.

The previous prime is 131023111189. The next prime is 131023111211. The reversal of 131023111202 is 202111320131.

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

It can be written as a sum of positive squares in only one way, i.e., 92245230961 + 38777880241 = 303719^2 + 196921^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32755777799 + ... + 32755777802.

Almost surely, 2^131023111202 is an apocalyptic number.

131023111202 is a deficient number, since it is larger than the sum of its proper divisors (65511555604).

131023111202 is an equidigital number, since it uses as much as digits as its factorization.

131023111202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65511555603.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 131023111202 its reverse (202111320131), we get a palindrome (333134431333).

The spelling of 131023111202 in words is "one hundred thirty-one billion, twenty-three million, one hundred eleven thousand, two hundred two".