131013860 has 24 divisors (see below), whose sum is σ = 281841336. Its totient is φ = 51127040.

The previous prime is 131013853. The next prime is 131013893. The reversal of 131013860 is 68310131.

It can be written as a sum of positive squares in 4 ways, for example, as 14546596 + 116467264 = 3814^2 + 10792^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79067 + ... + 80706.

It is an arithmetic number, because the mean of its divisors is an integer number (11743389).

Almost surely, 2^131013860 is an apocalyptic number.

131013860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131013860 is an abundant number, since it is smaller than the sum of its proper divisors (150827476).

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

131013860 is a wasteful number, since it uses less digits than its factorization.

131013860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159823 (or 159821 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 131013860 is about 11446.1286031566. The cubic root of 131013860 is about 507.8932185093.

Adding to 131013860 its reverse (68310131), we get a palindrome (199323991).

It can be divided in two parts, 13101 and 3860, that added together give a palindrome (16961).

The spelling of 131013860 in words is "one hundred thirty-one million, thirteen thousand, eight hundred sixty".