131020842 has 8 divisors (see below), whose sum is σ = 262041696. Its totient is φ = 43673612.

The previous prime is 131020837. The next prime is 131020847. The reversal of 131020842 is 248020131.

It is an interprime number because it is at equal distance from previous prime (131020837) and next prime (131020847).

It is a sphenic number, since it is the product of 3 distinct primes.

131020842 is an admirable number.

It is a super-2 number, since 2×131020842² = 34332922076777928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131020847) 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, 10918398 + ... + 10918409.

It is an arithmetic number, because the mean of its divisors is an integer number (32755212).

Almost surely, 2^131020842 is an apocalyptic number.

131020842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131020842 is a wasteful number, since it uses less digits than its factorization.

131020842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21836812.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 131020842 is about 11446.4335930455. The cubic root of 131020842 is about 507.9022405763.

Adding to 131020842 its reverse (248020131), we get a palindrome (379040973).

The spelling of 131020842 in words is "one hundred thirty-one million, twenty thousand, eight hundred forty-two".