131510312 has 8 divisors (see below), whose sum is σ = 246581850. Its totient is φ = 65755152.

The previous prime is 131510311. The next prime is 131510333. The reversal of 131510312 is 213015131.

It can be written as a sum of positive squares in only one way, i.e., 83429956 + 48080356 = 9134^2 + 6934^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (131510311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8219387 + ... + 8219402.

Almost surely, 2^131510312 is an apocalyptic number.

It is an amenable number.

131510312 is a deficient number, since it is larger than the sum of its proper divisors (115071538).

131510312 is a wasteful number, since it uses less digits than its factorization.

131510312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16438795 (or 16438791 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 131510312 is about 11467.7945569320. The cubic root of 131510312 is about 508.5339313526.

Adding to 131510312 its reverse (213015131), we get a palindrome (344525443).

The spelling of 131510312 in words is "one hundred thirty-one million, five hundred ten thousand, three hundred twelve".