140023213 has 4 divisors (see below), whose sum is σ = 152752608. Its totient is φ = 127293820.

The previous prime is 140023211. The next prime is 140023267. The reversal of 140023213 is 312320041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312320041 = 11 ⋅28392731.

It is a cyclic number.

It is not a de Polignac number, because 140023213 - 2¹ = 140023211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140023211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6364681 + ... + 6364702.

It is an arithmetic number, because the mean of its divisors is an integer number (38188152).

Almost surely, 2^140023213 is an apocalyptic number.

It is an amenable number.

140023213 is a deficient number, since it is larger than the sum of its proper divisors (12729395).

140023213 is a wasteful number, since it uses less digits than its factorization.

140023213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12729394.

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

The square root of 140023213 is about 11833.1404538271. The cubic root of 140023213 is about 519.2781070195.

Adding to 140023213 its reverse (312320041), we get a palindrome (452343254).

The spelling of 140023213 in words is "one hundred forty million, twenty-three thousand, two hundred thirteen".