140312423 has 2 divisors, whose sum is σ = 140312424. Its totient is φ = 140312422.

The previous prime is 140312377. The next prime is 140312449. The reversal of 140312423 is 324213041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140312423 - 2¹⁰ = 140311399 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 140312395 and 140312404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140312323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70156211 + 70156212.

It is an arithmetic number, because the mean of its divisors is an integer number (70156212).

Almost surely, 2^140312423 is an apocalyptic number.

140312423 is a deficient number, since it is larger than the sum of its proper divisors (1).

140312423 is an equidigital number, since it uses as much as digits as its factorization.

140312423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 140312423 is about 11845.3544902633. The cubic root of 140312423 is about 519.6353743140.

Adding to 140312423 its reverse (324213041), we get a palindrome (464525464).

The spelling of 140312423 in words is "one hundred forty million, three hundred twelve thousand, four hundred twenty-three".