140302331 has 8 divisors (see below), whose sum is σ = 151932144. Its totient is φ = 128792160.

The previous prime is 140302303. The next prime is 140302339. The reversal of 140302331 is 133203041.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140302331 is a prime.

It is a super-2 number, since 2×140302331² = 39369488168067122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140302339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27461 + ... + 32166.

It is an arithmetic number, because the mean of its divisors is an integer number (18991518).

Almost surely, 2^140302331 is an apocalyptic number.

140302331 is a deficient number, since it is larger than the sum of its proper divisors (11629813).

140302331 is a wasteful number, since it uses less digits than its factorization.

140302331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59821.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 140302331 is about 11844.9284928192. The cubic root of 140302331 is about 519.6229157214.

Adding to 140302331 its reverse (133203041), we get a palindrome (273505372).

It can be divided in two parts, 14030 and 2331, that added together give a palindrome (16361).

The spelling of 140302331 in words is "one hundred forty million, three hundred two thousand, three hundred thirty-one".