131244020 has 24 divisors (see below), whose sum is σ = 290119200. Its totient is φ = 49734432.

The previous prime is 131244019. The next prime is 131244031. The reversal of 131244020 is 20442131.

It is a self number, because there is not a number n which added to its sum of digits gives 131244020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172310 + ... + 173069.

It is an arithmetic number, because the mean of its divisors is an integer number (12088300).

Almost surely, 2^131244020 is an apocalyptic number.

131244020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131244020 is an abundant number, since it is smaller than the sum of its proper divisors (158875180).

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

131244020 is a wasteful number, since it uses less digits than its factorization.

131244020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345407 (or 345405 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 131244020 is about 11456.1782458200. The cubic root of 131244020 is about 508.1904601312.

Adding to 131244020 its reverse (20442131), we get a palindrome (151686151).

The spelling of 131244020 in words is "one hundred thirty-one million, two hundred forty-four thousand, twenty".