131242403 has 8 divisors (see below), whose sum is σ = 132254976. Its totient is φ = 130233600.

The previous prime is 131242399. The next prime is 131242409. The reversal of 131242403 is 304242131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131242403 - 2² = 131242399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131242409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128033 + ... + 129053.

It is an arithmetic number, because the mean of its divisors is an integer number (16531872).

Almost surely, 2^131242403 is an apocalyptic number.

131242403 is a deficient number, since it is larger than the sum of its proper divisors (1012573).

131242403 is a wasteful number, since it uses less digits than its factorization.

131242403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 131242403 is about 11456.1076723292. The cubic root of 131242403 is about 508.1883730587.

Adding to 131242403 its reverse (304242131), we get a palindrome (435484534).

The spelling of 131242403 in words is "one hundred thirty-one million, two hundred forty-two thousand, four hundred three".