131203213402202 has 4 divisors (see below), whose sum is σ = 196804820103306. Its totient is φ = 65601606701100.

The previous prime is 131203213402201. The next prime is 131203213402207. The reversal of 131203213402202 is 202204312302131.

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., 122536907590321 + 8666305811881 = 11069639^2 + 2943859^2 .

It is not an unprimeable number, because it can be changed into a prime (131203213402201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32800803350549 + ... + 32800803350552.

Almost surely, 2^{131203213402202} is an apocalyptic number.

131203213402202 is a deficient number, since it is larger than the sum of its proper divisors (65601606701104).

131203213402202 is an equidigital number, since it uses as much as digits as its factorization.

131203213402202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65601606701103.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 131203213402202 its reverse (202204312302131), we get a palindrome (333407525704333).

The spelling of 131203213402202 in words is "one hundred thirty-one trillion, two hundred three billion, two hundred thirteen million, four hundred two thousand, two hundred two".