140272731 has 12 divisors (see below), whose sum is σ = 202718880. Its totient is φ = 93467760.

The previous prime is 140272723. The next prime is 140272753. The reversal of 140272731 is 137272041.

It is a happy number.

It is not a de Polignac number, because 140272731 - 2³ = 140272723 is a prime.

It is a super-2 number, since 2×140272731² = 39352878124396722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140272695 and 140272704.

It is not an unprimeable number, because it can be changed into a prime (140272771) 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 11 ways as a sum of consecutive naturals, for example, 32350 + ... + 36428.

It is an arithmetic number, because the mean of its divisors is an integer number (16893240).

Almost surely, 2^140272731 is an apocalyptic number.

140272731 is a deficient number, since it is larger than the sum of its proper divisors (62446149).

140272731 is a wasteful number, since it uses less digits than its factorization.

140272731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7906 (or 7903 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 140272731 is about 11843.6789470164. The cubic root of 140272731 is about 519.5863710208.

The spelling of 140272731 in words is "one hundred forty million, two hundred seventy-two thousand, seven hundred thirty-one".