140656319 has 2 divisors, whose sum is σ = 140656320. Its totient is φ = 140656318.

The previous prime is 140656291. The next prime is 140656333. The reversal of 140656319 is 913656041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140656319 - 2¹² = 140652223 is a prime.

It is a super-2 number, since 2×140656319² = 39568400149259522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140656819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70328159 + 70328160.

It is an arithmetic number, because the mean of its divisors is an integer number (70328160).

Almost surely, 2^140656319 is an apocalyptic number.

140656319 is a deficient number, since it is larger than the sum of its proper divisors (1).

140656319 is an equidigital number, since it uses as much as digits as its factorization.

140656319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 140656319 is about 11859.8616771023. The cubic root of 140656319 is about 520.0595580205.

The spelling of 140656319 in words is "one hundred forty million, six hundred fifty-six thousand, three hundred nineteen".