140113817 has 4 divisors (see below), whose sum is σ = 142205136. Its totient is φ = 138022500.

The previous prime is 140113793. The next prime is 140113837. The reversal of 140113817 is 718311041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140113817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140113837) 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, 1045559 + ... + 1045692.

It is an arithmetic number, because the mean of its divisors is an integer number (35551284).

Almost surely, 2^140113817 is an apocalyptic number.

It is an amenable number.

140113817 is a deficient number, since it is larger than the sum of its proper divisors (2091319).

140113817 is an equidigital number, since it uses as much as digits as its factorization.

140113817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091318.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 140113817 is about 11836.9682351521. The cubic root of 140113817 is about 519.3900849514.

Adding to 140113817 its reverse (718311041), we get a palindrome (858424858).

The spelling of 140113817 in words is "one hundred forty million, one hundred thirteen thousand, eight hundred seventeen".