131278653 has 12 divisors (see below), whose sum is σ = 206863488. Its totient is φ = 79562760.

The previous prime is 131278579. The next prime is 131278663. The reversal of 131278653 is 356872131.

It is not a de Polignac number, because 131278653 - 2⁹ = 131278141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131278663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 662925 + ... + 663122.

It is an arithmetic number, because the mean of its divisors is an integer number (17238624).

Almost surely, 2^131278653 is an apocalyptic number.

It is an amenable number.

131278653 is a deficient number, since it is larger than the sum of its proper divisors (75584835).

131278653 is a wasteful number, since it uses less digits than its factorization.

131278653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326064 (or 1326061 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 131278653 is about 11457.6896885891. The cubic root of 131278653 is about 508.2351570561.

It can be divided in two parts, 131 and 278653, that added together give a square (278784 = 528²).

The spelling of 131278653 in words is "one hundred thirty-one million, two hundred seventy-eight thousand, six hundred fifty-three".