131457405 has 8 divisors (see below), whose sum is σ = 210331872. Its totient is φ = 70110608.

The previous prime is 131457401. The next prime is 131457427. The reversal of 131457405 is 504754131.

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 131457405 - 2² = 131457401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131457401) 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, 4381899 + ... + 4381928.

It is an arithmetic number, because the mean of its divisors is an integer number (26291484).

Almost surely, 2^131457405 is an apocalyptic number.

131457405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131457405 is a deficient number, since it is larger than the sum of its proper divisors (78874467).

131457405 is an equidigital number, since it uses as much as digits as its factorization.

131457405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8763835.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 131457405 is about 11465.4875605009. The cubic root of 131457405 is about 508.4657272879.

The spelling of 131457405 in words is "one hundred thirty-one million, four hundred fifty-seven thousand, four hundred five".