140131007 has 4 divisors (see below), whose sum is σ = 140387736. Its totient is φ = 139874280.

The previous prime is 140130967. The next prime is 140131009. The reversal of 140131007 is 700131041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140131007 - 2¹⁸ = 139868863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140131009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127544 + ... + 128637.

It is an arithmetic number, because the mean of its divisors is an integer number (35096934).

Almost surely, 2^140131007 is an apocalyptic number.

140131007 is a deficient number, since it is larger than the sum of its proper divisors (256729).

140131007 is an equidigital number, since it uses as much as digits as its factorization.

140131007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256728.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 140131007 is about 11837.6943278664. The cubic root of 140131007 is about 519.4113247088.

Adding to 140131007 its reverse (700131041), we get a palindrome (840262048).

The spelling of 140131007 in words is "one hundred forty million, one hundred thirty-one thousand, seven".