140303221 has 2 divisors, whose sum is σ = 140303222. Its totient is φ = 140303220.

The previous prime is 140303167. The next prime is 140303237. The reversal of 140303221 is 122303041.

It is a happy number.

It is an a-pointer prime, because the next prime (140303237) can be obtained adding 140303221 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91107025 + 49196196 = 9545^2 + 7014^2 .

It is a cyclic number.

It is not a de Polignac number, because 140303221 - 2⁹ = 140302709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140303195 and 140303204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140303291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70151610 + 70151611.

It is an arithmetic number, because the mean of its divisors is an integer number (70151611).

Almost surely, 2^140303221 is an apocalyptic number.

It is an amenable number.

140303221 is a deficient number, since it is larger than the sum of its proper divisors (1).

140303221 is an equidigital number, since it uses as much as digits as its factorization.

140303221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 140303221 is about 11844.9660615808. The cubic root of 140303221 is about 519.6240144521.

Adding to 140303221 its reverse (122303041), we get a palindrome (262606262).

The spelling of 140303221 in words is "one hundred forty million, three hundred three thousand, two hundred twenty-one".