131382021 has 16 divisors (see below), whose sum is σ = 178381440. Its totient is φ = 85995840.

The previous prime is 131382019. The next prime is 131382023. The reversal of 131382021 is 120283131.

It is an interprime number because it is at equal distance from previous prime (131382019) and next prime (131382023).

It is not a de Polignac number, because 131382021 - 2¹ = 131382019 is a prime.

It is a super-2 number, since 2×131382021² = 34522470884088882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131382023) 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, 56151 + ... + 58443.

It is an arithmetic number, because the mean of its divisors is an integer number (11148840).

Almost surely, 2^131382021 is an apocalyptic number.

It is an amenable number.

131382021 is a deficient number, since it is larger than the sum of its proper divisors (46999419).

131382021 is a wasteful number, since it uses less digits than its factorization.

131382021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2636.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 131382021 is about 11462.1996580063. The cubic root of 131382021 is about 508.3685158008.

The spelling of 131382021 in words is "one hundred thirty-one million, three hundred eighty-two thousand, twenty-one".