140031401 has 4 divisors (see below), whose sum is σ = 144860100. Its totient is φ = 135202704.

The previous prime is 140031361. The next prime is 140031403. The reversal of 140031401 is 104130041.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 59660176 + 80371225 = 7724^2 + 8965^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140031401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140031403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2414306 + ... + 2414363.

It is an arithmetic number, because the mean of its divisors is an integer number (36215025).

Almost surely, 2^140031401 is an apocalyptic number.

It is an amenable number.

140031401 is a deficient number, since it is larger than the sum of its proper divisors (4828699).

140031401 is an equidigital number, since it uses as much as digits as its factorization.

140031401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4828698.

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

The square root of 140031401 is about 11833.4864262397. The cubic root of 140031401 is about 519.2882285943.

Adding to 140031401 its reverse (104130041), we get a palindrome (244161442).

The spelling of 140031401 in words is "one hundred forty million, thirty-one thousand, four hundred one".