131202222423406 has 4 divisors (see below), whose sum is σ = 196803333635112. Its totient is φ = 65601111211702.

The previous prime is 131202222423403. The next prime is 131202222423479. The reversal of 131202222423406 is 604324222202131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131202222423403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32800555605850 + ... + 32800555605853.

It is an arithmetic number, because the mean of its divisors is an integer number (49200833408778).

Almost surely, 2^{131202222423406} is an apocalyptic number.

131202222423406 is a deficient number, since it is larger than the sum of its proper divisors (65601111211706).

131202222423406 is an equidigital number, since it uses as much as digits as its factorization.

131202222423406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65601111211705.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 131202222423406 its reverse (604324222202131), we get a palindrome (735526444625537).

The spelling of 131202222423406 in words is "one hundred thirty-one trillion, two hundred two billion, two hundred twenty-two million, four hundred twenty-three thousand, four hundred six".