140231451 has 4 divisors (see below), whose sum is σ = 186975272. Its totient is φ = 93487632.

The previous prime is 140231449. The next prime is 140231479. The reversal of 140231451 is 154132041.

140231451 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.

It is not a de Polignac number, because 140231451 - 2¹ = 140231449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140231411) 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, 23371906 + ... + 23371911.

It is an arithmetic number, because the mean of its divisors is an integer number (46743818).

Almost surely, 2^140231451 is an apocalyptic number.

140231451 is a deficient number, since it is larger than the sum of its proper divisors (46743821).

140231451 is an equidigital number, since it uses as much as digits as its factorization.

140231451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46743820.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 140231451 is about 11841.9361170376. The cubic root of 140231451 is about 519.5353973935.

Adding to 140231451 its reverse (154132041), we get a palindrome (294363492).

The spelling of 140231451 in words is "one hundred forty million, two hundred thirty-one thousand, four hundred fifty-one".