131421244 has 24 divisors (see below), whose sum is σ = 235883648. Its totient is φ = 64033200.

The previous prime is 131421239. The next prime is 131421281. The reversal of 131421244 is 442124131.

It is a happy number.

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, 124519 + ... + 125569.

Almost surely, 2^131421244 is an apocalyptic number.

It is an amenable number.

131421244 is a deficient number, since it is larger than the sum of its proper divisors (104462404).

131421244 is a wasteful number, since it uses less digits than its factorization.

131421244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825 (or 1823 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 131421244 is about 11463.9105020931. The cubic root of 131421244 is about 508.4191004855.

Adding to 131421244 its reverse (442124131), we get a palindrome (573545375).

The spelling of 131421244 in words is "one hundred thirty-one million, four hundred twenty-one thousand, two hundred forty-four".