140236997 has 2 divisors, whose sum is σ = 140236998. Its totient is φ = 140236996.

The previous prime is 140236969. The next prime is 140237017. The reversal of 140236997 is 799632041.

140236997 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., 140161921 + 75076 = 11839^2 + 274^2 .

It is a cyclic number.

It is not a de Polignac number, because 140236997 - 2¹⁸ = 139974853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140236907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70118498 + 70118499.

It is an arithmetic number, because the mean of its divisors is an integer number (70118499).

Almost surely, 2^140236997 is an apocalyptic number.

It is an amenable number.

140236997 is a deficient number, since it is larger than the sum of its proper divisors (1).

140236997 is an equidigital number, since it uses as much as digits as its factorization.

140236997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 140236997 is about 11842.1702825116. The cubic root of 140236997 is about 519.5422463215.

The spelling of 140236997 in words is "one hundred forty million, two hundred thirty-six thousand, nine hundred ninety-seven".