131012040 has 64 divisors (see below), whose sum is σ = 398597760. Its totient is φ = 34442240.

The previous prime is 131012039. The next prime is 131012041. The reversal of 131012040 is 40210131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (131012039) and next prime (131012041).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (131012041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 832 + ... + 16208.

It is an arithmetic number, because the mean of its divisors is an integer number (6228090).

Almost surely, 2^131012040 is an apocalyptic number.

131012040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131012040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199298880).

131012040 is an abundant number, since it is smaller than the sum of its proper divisors (267585720).

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

131012040 is a wasteful number, since it uses less digits than its factorization.

131012040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15462 (or 15458 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 131012040 is about 11446.0491000170. The cubic root of 131012040 is about 507.8908666717.

Adding to 131012040 its reverse (40210131), we get a palindrome (171222171).

The spelling of 131012040 in words is "one hundred thirty-one million, twelve thousand, forty".