140111691 has 4 divisors (see below), whose sum is σ = 186815592. Its totient is φ = 93407792.

The previous prime is 140111689. The next prime is 140111737. The reversal of 140111691 is 196111041.

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 140111691 - 2¹ = 140111689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140111611) 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, 23351946 + ... + 23351951.

It is an arithmetic number, because the mean of its divisors is an integer number (46703898).

Almost surely, 2^140111691 is an apocalyptic number.

140111691 is a deficient number, since it is larger than the sum of its proper divisors (46703901).

140111691 is an equidigital number, since it uses as much as digits as its factorization.

140111691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46703900.

The product of its (nonzero) digits is 216, while the sum is 24.

The square root of 140111691 is about 11836.8784314109. The cubic root of 140111691 is about 519.3874579706.

The spelling of 140111691 in words is "one hundred forty million, one hundred eleven thousand, six hundred ninety-one".