131423433220403 has 6 divisors (see below), whose sum is σ = 133414253777196. Its totient is φ = 129461889436572.

The previous prime is 131423433220337. The next prime is 131423433220411. The reversal of 131423433220403 is 304022334324131.

It is not a de Polignac number, because 131423433220403 - 2¹² = 131423433216307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131423433220003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14638381925 + ... + 14638390902.

It is an arithmetic number, because the mean of its divisors is an integer number (22235708962866).

Almost surely, 2^{131423433220403} is an apocalyptic number.

131423433220403 is a deficient number, since it is larger than the sum of its proper divisors (1990820556793).

131423433220403 is an frugal number, since it uses more digits than its factorization.

131423433220403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29276772961 (or 29276772894 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 131423433220403 its reverse (304022334324131), we get a palindrome (435445767544534).

The spelling of 131423433220403 in words is "one hundred thirty-one trillion, four hundred twenty-three billion, four hundred thirty-three million, two hundred twenty thousand, four hundred three".