140831456 has 12 divisors (see below), whose sum is σ = 277261992. Its totient is φ = 70415712.

The previous prime is 140831437. The next prime is 140831459. The reversal of 140831456 is 654138041.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 4400983 = 140831456 / (1 + 4 + 0 + 8 + 3 + 1 + 4 + 5 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140831459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2200460 + ... + 2200523.

It is an arithmetic number, because the mean of its divisors is an integer number (23105166).

Almost surely, 2^140831456 is an apocalyptic number.

140831456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

140831456 is a deficient number, since it is larger than the sum of its proper divisors (136430536).

140831456 is an equidigital number, since it uses as much as digits as its factorization.

140831456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4400993 (or 4400985 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 140831456 is about 11867.2429822600. The cubic root of 140831456 is about 520.2753177162.

Adding to 140831456 its reverse (654138041), we get a palindrome (794969497).

The spelling of 140831456 in words is "one hundred forty million, eight hundred thirty-one thousand, four hundred fifty-six".