131428603 has 4 divisors (see below), whose sum is σ = 132634480. Its totient is φ = 130222728.

The previous prime is 131428589. The next prime is 131428631. The reversal of 131428603 is 306824131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131428603 - 2⁵ = 131428571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131428673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602775 + ... + 602992.

It is an arithmetic number, because the mean of its divisors is an integer number (33158620).

Almost surely, 2^131428603 is an apocalyptic number.

131428603 is a deficient number, since it is larger than the sum of its proper divisors (1205877).

131428603 is a wasteful number, since it uses less digits than its factorization.

131428603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205876.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 131428603 is about 11464.2314613759. The cubic root of 131428603 is about 508.4285900379.

The spelling of 131428603 in words is "one hundred thirty-one million, four hundred twenty-eight thousand, six hundred three".