131203402 has 8 divisors (see below), whose sum is σ = 214696512. Its totient is φ = 59637900.

The previous prime is 131203381. The next prime is 131203451. The reversal of 131203402 is 204302131.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2981874 + ... + 2981917.

It is an arithmetic number, because the mean of its divisors is an integer number (26837064).

Almost surely, 2^131203402 is an apocalyptic number.

131203402 is a deficient number, since it is larger than the sum of its proper divisors (83493110).

131203402 is a wasteful number, since it uses less digits than its factorization.

131203402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5963804.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 131203402 is about 11454.4053534001. The cubic root of 131203402 is about 508.1380290188.

Adding to 131203402 its reverse (204302131), we get a palindrome (335505533).

The spelling of 131203402 in words is "one hundred thirty-one million, two hundred three thousand, four hundred two".