140237307 has 24 divisors (see below), whose sum is σ = 234681824. Its totient is φ = 79035264.

The previous prime is 140237291. The next prime is 140237393. The reversal of 140237307 is 703732041.

It is not a de Polignac number, because 140237307 - 2⁴ = 140237291 is a prime.

It is a super-2 number, since 2×140237307² = 39333004549224498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140277307) 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, 10648 + ... + 19845.

Almost surely, 2^140237307 is an apocalyptic number.

140237307 is a deficient number, since it is larger than the sum of its proper divisors (94444517).

140237307 is a wasteful number, since it uses less digits than its factorization.

140237307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30579 (or 30576 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 140237307 is about 11842.1833713214. The cubic root of 140237307 is about 519.5426291448.

Adding to 140237307 its reverse (703732041), we get a palindrome (843969348).

The spelling of 140237307 in words is "one hundred forty million, two hundred thirty-seven thousand, three hundred seven".