140230431 has 24 divisors (see below), whose sum is σ = 232602240. Its totient is φ = 80514000.

The previous prime is 140230427. The next prime is 140230459. The reversal of 140230431 is 134032041.

140230431 is a `hidden beast` number, since 1 + 4 + 0 + 230 + 431 = 666.

It is not a de Polignac number, because 140230431 - 2² = 140230427 is a prime.

It is a super-2 number, since 2×140230431² = 39329147556891522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140230411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35395 + ... + 39156.

It is an arithmetic number, because the mean of its divisors is an integer number (9691760).

Almost surely, 2^140230431 is an apocalyptic number.

140230431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

140230431 is a deficient number, since it is larger than the sum of its proper divisors (92371809).

140230431 is a wasteful number, since it uses less digits than its factorization.

140230431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74587 (or 74584 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 140230431 is about 11841.8930496775. The cubic root of 140230431 is about 519.5341377441.

Adding to 140230431 its reverse (134032041), we get a palindrome (274262472).

The spelling of 140230431 in words is "one hundred forty million, two hundred thirty thousand, four hundred thirty-one".