131172653 has 4 divisors (see below), whose sum is σ = 134372028. Its totient is φ = 127973280.

The previous prime is 131172649. The next prime is 131172673. The reversal of 131172653 is 356271131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6135529 + 125037124 = 2477^2 + 11182^2 .

It is a cyclic number.

It is not a de Polignac number, because 131172653 - 2² = 131172649 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 (131172673) 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, 1599626 + ... + 1599707.

It is an arithmetic number, because the mean of its divisors is an integer number (33593007).

Almost surely, 2^131172653 is an apocalyptic number.

It is an amenable number.

131172653 is a deficient number, since it is larger than the sum of its proper divisors (3199375).

131172653 is an equidigital number, since it uses as much as digits as its factorization.

131172653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199374.

The product of its digits is 3780, while the sum is 29.

The square root of 131172653 is about 11453.0630400780. The cubic root of 131172653 is about 508.0983299541.

The spelling of 131172653 in words is "one hundred thirty-one million, one hundred seventy-two thousand, six hundred fifty-three".