131246644 has 12 divisors (see below), whose sum is σ = 229845924. Its totient is φ = 65576384.

The previous prime is 131246639. The next prime is 131246651. The reversal of 131246644 is 446642131.

It can be written as a sum of positive squares in 2 ways, for example, as 90440100 + 40806544 = 9510^2 + 6388^2 .

It is a super-2 number, since 2×131246644² = 34451363122525472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5017 + ... + 16960.

It is an arithmetic number, because the mean of its divisors is an integer number (19153827).

Almost surely, 2^131246644 is an apocalyptic number.

It is an amenable number.

131246644 is a deficient number, since it is larger than the sum of its proper divisors (98599280).

131246644 is a wasteful number, since it uses less digits than its factorization.

131246644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23474 (or 23472 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 131246644 is about 11456.2927686054. The cubic root of 131246644 is about 508.1938469087.

Adding to 131246644 its reverse (446642131), we get a palindrome (577888775).

The spelling of 131246644 in words is "one hundred thirty-one million, two hundred forty-six thousand, six hundred forty-four".