140431465 has 8 divisors (see below), whose sum is σ = 173072520. Its totient is φ = 109308672.

The previous prime is 140431453. The next prime is 140431481. The reversal of 140431465 is 564134041.

It can be written as a sum of positive squares in 4 ways, for example, as 42263001 + 98168464 = 6501^2 + 9908^2 .

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 140431465 - 2¹⁷ = 140300393 is a prime.

It is an unprimeable number.

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, 379360 + ... + 379729.

It is an arithmetic number, because the mean of its divisors is an integer number (21634065).

Almost surely, 2^140431465 is an apocalyptic number.

It is an amenable number.

140431465 is a deficient number, since it is larger than the sum of its proper divisors (32641055).

140431465 is an equidigital number, since it uses as much as digits as its factorization.

140431465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759131.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 140431465 is about 11850.3782640049. The cubic root of 140431465 is about 519.7822868193.

The spelling of 140431465 in words is "one hundred forty million, four hundred thirty-one thousand, four hundred sixty-five".