140691211 has 2 divisors, whose sum is σ = 140691212. Its totient is φ = 140691210.

The previous prime is 140691149. The next prime is 140691233. The reversal of 140691211 is 112196041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140691211 - 2¹⁵ = 140658443 is a prime.

It is not a weakly prime, because it can be changed into another prime (140691241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70345605 + 70345606.

It is an arithmetic number, because the mean of its divisors is an integer number (70345606).

Almost surely, 2^140691211 is an apocalyptic number.

140691211 is a deficient number, since it is larger than the sum of its proper divisors (1).

140691211 is an equidigital number, since it uses as much as digits as its factorization.

140691211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 140691211 is about 11861.3325979841. The cubic root of 140691211 is about 520.1025574344.

The spelling of 140691211 in words is "one hundred forty million, six hundred ninety-one thousand, two hundred eleven".