140031023 has 8 divisors (see below), whose sum is σ = 161747280. Its totient is φ = 119812480.

The previous prime is 140031019. The next prime is 140031029. The reversal of 140031023 is 320130041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140031023 - 2² = 140031019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140030989 and 140031007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140031029) 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 7 ways as a sum of consecutive naturals, for example, 374228 + ... + 374601.

It is an arithmetic number, because the mean of its divisors is an integer number (20218410).

Almost surely, 2^140031023 is an apocalyptic number.

140031023 is a deficient number, since it is larger than the sum of its proper divisors (21716257).

140031023 is a wasteful number, since it uses less digits than its factorization.

140031023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748857.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 140031023 is about 11833.4704546046. The cubic root of 140031023 is about 519.2877613393.

Adding to 140031023 its reverse (320130041), we get a palindrome (460161064).

It can be divided in two parts, 1400 and 31023, that added together give a palindrome (32423).

The spelling of 140031023 in words is "one hundred forty million, thirty-one thousand, twenty-three".