131203422 has 32 divisors (see below), whose sum is σ = 333216000. Its totient is φ = 37486584.

The previous prime is 131203381. The next prime is 131203451. The reversal of 131203422 is 224302131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 131203395 and 131203404.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 173172 + ... + 173927.

It is an arithmetic number, because the mean of its divisors is an integer number (10413000).

Almost surely, 2^131203422 is an apocalyptic number.

131203422 is an abundant number, since it is smaller than the sum of its proper divisors (202012578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131203422 is a wasteful number, since it uses less digits than its factorization.

131203422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347117 (or 347111 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 131203422 is about 11454.4062264266. The cubic root of 131203422 is about 508.1380548381.

Adding to 131203422 its reverse (224302131), we get a palindrome (355505553).

The spelling of 131203422 in words is "one hundred thirty-one million, two hundred three thousand, four hundred twenty-two".