131012403 has 8 divisors (see below), whose sum is σ = 177290688. Its totient is φ = 86037864.

The previous prime is 131012389. The next prime is 131012419. The reversal of 131012403 is 304210131.

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

It is not a de Polignac number, because 131012403 - 2⁹ = 131011891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131012423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325701 + ... + 326102.

It is an arithmetic number, because the mean of its divisors is an integer number (22161336).

Almost surely, 2^131012403 is an apocalyptic number.

131012403 is a deficient number, since it is larger than the sum of its proper divisors (46278285).

131012403 is an equidigital number, since it uses as much as digits as its factorization.

131012403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651873.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 131012403 is about 11446.0649570060. The cubic root of 131012403 is about 507.8913357488.

Adding to 131012403 its reverse (304210131), we get a palindrome (435222534).

The spelling of 131012403 in words is "one hundred thirty-one million, twelve thousand, four hundred three".