140403023 has 4 divisors (see below), whose sum is σ = 140426880. Its totient is φ = 140379168.

The previous prime is 140403013. The next prime is 140403031. The reversal of 140403023 is 320304041.

140403023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 320304041 = 13417 ⋅23873.

It is a cyclic number.

It is not a de Polignac number, because 140403023 - 2¹⁴ = 140386639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140402992 and 140403010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140403013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3911 + ... + 17207.

It is an arithmetic number, because the mean of its divisors is an integer number (35106720).

Almost surely, 2^140403023 is an apocalyptic number.

140403023 is a deficient number, since it is larger than the sum of its proper divisors (23857).

140403023 is a wasteful number, since it uses less digits than its factorization.

140403023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23856.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 140403023 is about 11849.1781571550. The cubic root of 140403023 is about 519.7471934353.

Adding to 140403023 its reverse (320304041), we get a palindrome (460707064).

The spelling of 140403023 in words is "one hundred forty million, four hundred three thousand, twenty-three".