131545453 has 4 divisors (see below), whose sum is σ = 141664348. Its totient is φ = 121426560.

The previous prime is 131545409. The next prime is 131545459. The reversal of 131545453 is 354545131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 354545131 = 151 ⋅2347981.

It can be written as a sum of positive squares in 2 ways, for example, as 50509449 + 81036004 = 7107^2 + 9002^2 .

It is a cyclic number.

It is not a de Polignac number, because 131545453 - 2¹³ = 131537261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131545459) 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, 5059428 + ... + 5059453.

It is an arithmetic number, because the mean of its divisors is an integer number (35416087).

Almost surely, 2^131545453 is an apocalyptic number.

131545453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

131545453 is a deficient number, since it is larger than the sum of its proper divisors (10118895).

131545453 is a wasteful number, since it uses less digits than its factorization.

131545453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10118894.

The product of its digits is 18000, while the sum is 31.

The square root of 131545453 is about 11469.3266149325. The cubic root of 131545453 is about 508.5792226030.

The spelling of 131545453 in words is "one hundred thirty-one million, five hundred forty-five thousand, four hundred fifty-three".