140250731 has 8 divisors (see below), whose sum is σ = 148644720. Its totient is φ = 131872768.

The previous prime is 140250701. The next prime is 140250767. The reversal of 140250731 is 137052041.

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-140250731 is a prime.

It is a super-2 number, since 2×140250731² = 39340535092068722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140250697 and 140250706.

It is not an unprimeable number, because it can be changed into a prime (140250701) by changing a digit.

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, 17300 + ... + 24078.

It is an arithmetic number, because the mean of its divisors is an integer number (18580590).

Almost surely, 2^140250731 is an apocalyptic number.

140250731 is a deficient number, since it is larger than the sum of its proper divisors (8393989).

140250731 is a wasteful number, since it uses less digits than its factorization.

140250731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8013.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 140250731 is about 11842.7501451310. The cubic root of 140250731 is about 519.5592060882.

The spelling of 140250731 in words is "one hundred forty million, two hundred fifty thousand, seven hundred thirty-one".