131010820545 has 16 divisors (see below), whose sum is σ = 228673432512. Its totient is φ = 63520397760.

The previous prime is 131010820459. The next prime is 131010820561. The reversal of 131010820545 is 545028010131.

It is not a de Polignac number, because 131010820545 - 2⁷ = 131010820417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397002322 + ... + 397002651.

It is an arithmetic number, because the mean of its divisors is an integer number (14292089532).

Almost surely, 2^131010820545 is an apocalyptic number.

131010820545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131010820545 is a deficient number, since it is larger than the sum of its proper divisors (97662611967).

131010820545 is a wasteful number, since it uses less digits than its factorization.

131010820545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794004992.

The product of its (nonzero) digits is 4800, while the sum is 30.

Adding to 131010820545 its reverse (545028010131), we get a palindrome (676038830676).

The spelling of 131010820545 in words is "one hundred thirty-one billion, ten million, eight hundred twenty thousand, five hundred forty-five".