131356451 has 4 divisors (see below), whose sum is σ = 132359304. Its totient is φ = 130353600.

The previous prime is 131356441. The next prime is 131356469. The reversal of 131356451 is 154653131.

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 131356451 - 2⁶ = 131356387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131356411) 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, 501230 + ... + 501491.

It is an arithmetic number, because the mean of its divisors is an integer number (33089826).

Almost surely, 2^131356451 is an apocalyptic number.

131356451 is a deficient number, since it is larger than the sum of its proper divisors (1002853).

131356451 is a wasteful number, since it uses less digits than its factorization.

131356451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002852.

The product of its digits is 5400, while the sum is 29.

The square root of 131356451 is about 11461.0841982772. The cubic root of 131356451 is about 508.3355335448.

The spelling of 131356451 in words is "one hundred thirty-one million, three hundred fifty-six thousand, four hundred fifty-one".