131020653 has 4 divisors (see below), whose sum is σ = 174694208. Its totient is φ = 87347100.

The previous prime is 131020633. The next prime is 131020691. The reversal of 131020653 is 356020131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 356020131 = 3 ⋅118673377.

It is not a de Polignac number, because 131020653 - 2⁵ = 131020621 is a prime.

It is a super-3 number, since 3×131020653³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131020633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21836773 + ... + 21836778.

It is an arithmetic number, because the mean of its divisors is an integer number (43673552).

Almost surely, 2^131020653 is an apocalyptic number.

It is an amenable number.

131020653 is a deficient number, since it is larger than the sum of its proper divisors (43673555).

131020653 is an equidigital number, since it uses as much as digits as its factorization.

131020653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43673554.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 131020653 is about 11446.4253371959. The cubic root of 131020653 is about 507.9019963567.

Adding to 131020653 its reverse (356020131), we get a palindrome (487040784).

The spelling of 131020653 in words is "one hundred thirty-one million, twenty thousand, six hundred fifty-three".