131222403 has 32 divisors (see below), whose sum is σ = 210665280. Its totient is φ = 80248320.

The previous prime is 131222353. The next prime is 131222423. The reversal of 131222403 is 304222131.

It is not a de Polignac number, because 131222403 - 2¹⁰ = 131221379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131222423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59643 + ... + 61803.

It is an arithmetic number, because the mean of its divisors is an integer number (6583290).

Almost surely, 2^131222403 is an apocalyptic number.

131222403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131222403 is a deficient number, since it is larger than the sum of its proper divisors (79442877).

131222403 is a wasteful number, since it uses less digits than its factorization.

131222403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2356 (or 2350 counting only the distinct ones).

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

The square root of 131222403 is about 11455.2347422478. The cubic root of 131222403 is about 508.1625575104.

Adding to 131222403 its reverse (304222131), we get a palindrome (435444534).

The spelling of 131222403 in words is "one hundred thirty-one million, two hundred twenty-two thousand, four hundred three".