131312650 has 36 divisors (see below), whose sum is σ = 284122998. Its totient is φ = 45020640.

The previous prime is 131312639. The next prime is 131312651. The reversal of 131312650 is 56213131.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 120626289 + 10686361 = 10983^2 + 3269^2 .

It is not an unprimeable number, because it can be changed into a prime (131312651) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 24349 + ... + 29248.

Almost surely, 2^131312650 is an apocalyptic number.

131312650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131312650 is an abundant number, since it is smaller than the sum of its proper divisors (152810348).

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

131312650 is a wasteful number, since it uses less digits than its factorization.

131312650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53623 (or 53611 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 131312650 is about 11459.1731813425. The cubic root of 131312650 is about 508.2790255219.

Adding to 131312650 its reverse (56213131), we get a palindrome (187525781).

The spelling of 131312650 in words is "one hundred thirty-one million, three hundred twelve thousand, six hundred fifty".