131455403 has 4 divisors (see below), whose sum is σ = 132932520. Its totient is φ = 129978288.

The previous prime is 131455393. The next prime is 131455411. The reversal of 131455403 is 304554131.

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 131455403 - 2⁸ = 131455147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131455003) 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, 738425 + ... + 738602.

It is an arithmetic number, because the mean of its divisors is an integer number (33233130).

Almost surely, 2^131455403 is an apocalyptic number.

131455403 is a deficient number, since it is larger than the sum of its proper divisors (1477117).

131455403 is an equidigital number, since it uses as much as digits as its factorization.

131455403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477116.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 131455403 is about 11465.4002546793. The cubic root of 131455403 is about 508.4631460879.

The spelling of 131455403 in words is "one hundred thirty-one million, four hundred fifty-five thousand, four hundred three".