140971693 has 2 divisors, whose sum is σ = 140971694. Its totient is φ = 140971692.

The previous prime is 140971661. The next prime is 140971711. The reversal of 140971693 is 396179041.

140971693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124947684 + 16024009 = 11178^2 + 4003^2 .

It is a cyclic number.

It is not a de Polignac number, because 140971693 - 2⁵ = 140971661 is a prime.

It is equal to p_7963807 and since 140971693 and 7963807 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140971603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70485846 + 70485847.

It is an arithmetic number, because the mean of its divisors is an integer number (70485847).

Almost surely, 2^140971693 is an apocalyptic number.

It is an amenable number.

140971693 is a deficient number, since it is larger than the sum of its proper divisors (1).

140971693 is an equidigital number, since it uses as much as digits as its factorization.

140971693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 140971693 is about 11873.1500874873. The cubic root of 140971693 is about 520.4479534971.

The spelling of 140971693 in words is "one hundred forty million, nine hundred seventy-one thousand, six hundred ninety-three".