140231399 has 16 divisors (see below), whose sum is σ = 177054720. Its totient is φ = 107883360.

The previous prime is 140231387. The next prime is 140231407. The reversal of 140231399 is 993132041.

It is a cyclic number.

It is not a de Polignac number, because 140231399 - 2¹⁶ = 140165863 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 (140231359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5444 + ... + 17609.

It is an arithmetic number, because the mean of its divisors is an integer number (11065920).

Almost surely, 2^140231399 is an apocalyptic number.

140231399 is a deficient number, since it is larger than the sum of its proper divisors (36823321).

140231399 is a wasteful number, since it uses less digits than its factorization.

140231399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23150.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 140231399 is about 11841.9339214505. The cubic root of 140231399 is about 519.5353331762.

The spelling of 140231399 in words is "one hundred forty million, two hundred thirty-one thousand, three hundred ninety-nine".