131016320645 has 32 divisors (see below), whose sum is σ = 180702973440. Its totient is φ = 89329340160.

The previous prime is 131016320629. The next prime is 131016320657. The reversal of 131016320645 is 546023610131.

It is not a de Polignac number, because 131016320645 - 2⁴ = 131016320629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4966751 + ... + 4993059.

It is an arithmetic number, because the mean of its divisors is an integer number (5646967920).

Almost surely, 2^131016320645 is an apocalyptic number.

It is an amenable number.

131016320645 is a deficient number, since it is larger than the sum of its proper divisors (49686652795).

131016320645 is a wasteful number, since it uses less digits than its factorization.

131016320645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27125.

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 131016320645 its reverse (546023610131), we get a palindrome (677039930776).

The spelling of 131016320645 in words is "one hundred thirty-one billion, sixteen million, three hundred twenty thousand, six hundred forty-five".