140113691 has 4 divisors (see below), whose sum is σ = 140139552. Its totient is φ = 140087832.

The previous prime is 140113667. The next prime is 140113697. The reversal of 140113691 is 196311041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196311041 = 631 ⋅311111.

It is a cyclic number.

It is not a de Polignac number, because 140113691 - 2¹⁰ = 140112667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140113691.

It is not an unprimeable number, because it can be changed into a prime (140113697) 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, 1340 + ... + 16793.

It is an arithmetic number, because the mean of its divisors is an integer number (35034888).

Almost surely, 2^140113691 is an apocalyptic number.

140113691 is a deficient number, since it is larger than the sum of its proper divisors (25861).

140113691 is an equidigital number, since it uses as much as digits as its factorization.

140113691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25860.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 140113691 is about 11836.9629128421. The cubic root of 140113691 is about 519.3899292609.

The spelling of 140113691 in words is "one hundred forty million, one hundred thirteen thousand, six hundred ninety-one".