140313691 has 4 divisors (see below), whose sum is σ = 160358512. Its totient is φ = 120268872.

The previous prime is 140313673. The next prime is 140313703. The reversal of 140313691 is 196313041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196313041 = 2857 ⋅68713.

It is a cyclic number.

It is not a de Polignac number, because 140313691 - 2¹⁷ = 140182619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140313661) 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, 10022400 + ... + 10022413.

It is an arithmetic number, because the mean of its divisors is an integer number (40089628).

Almost surely, 2^140313691 is an apocalyptic number.

140313691 is a deficient number, since it is larger than the sum of its proper divisors (20044821).

140313691 is an equidigital number, since it uses as much as digits as its factorization.

140313691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20044820.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 140313691 is about 11845.4080132345. The cubic root of 140313691 is about 519.6369396201.

The spelling of 140313691 in words is "one hundred forty million, three hundred thirteen thousand, six hundred ninety-one".