131004140 has 24 divisors (see below), whose sum is σ = 283984512. Its totient is φ = 50711040.

The previous prime is 131004089. The next prime is 131004191. The reversal of 131004140 is 41400131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (131004089) and next prime (131004191).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105029 + ... + 106268.

It is an arithmetic number, because the mean of its divisors is an integer number (11832688).

Almost surely, 2^131004140 is an apocalyptic number.

131004140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131004140 is an abundant number, since it is smaller than the sum of its proper divisors (152980372).

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

131004140 is a wasteful number, since it uses less digits than its factorization.

131004140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211337 (or 211335 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 131004140 is about 11445.7039975704. The cubic root of 131004140 is about 507.8806578937.

Adding to 131004140 its reverse (41400131), we get a palindrome (172404271).

The spelling of 131004140 in words is "one hundred thirty-one million, four thousand, one hundred forty".