131253021 has 16 divisors (see below), whose sum is σ = 194737920. Its totient is φ = 87372000.

The previous prime is 131253011. The next prime is 131253041. The reversal of 131253021 is 120352131.

131253021 is a `hidden beast` number, since 131 + 2 + 530 + 2 + 1 = 666.

It is not a de Polignac number, because 131253021 - 2¹⁰ = 131251997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131252985 and 131253003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131253011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17041 + ... + 23513.

It is an arithmetic number, because the mean of its divisors is an integer number (12171120).

Almost surely, 2^131253021 is an apocalyptic number.

It is an amenable number.

131253021 is a deficient number, since it is larger than the sum of its proper divisors (63484899).

131253021 is an equidigital number, since it uses as much as digits as its factorization.

131253021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7233 (or 7227 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 131253021 is about 11456.5710838802. The cubic root of 131253021 is about 508.2020774675.

The spelling of 131253021 in words is "one hundred thirty-one million, two hundred fifty-three thousand, twenty-one".