140311983 has 32 divisors (see below), whose sum is σ = 230326272. Its totient is φ = 74210400.

The previous prime is 140311981. The next prime is 140312027. The reversal of 140311983 is 389113041.

It is not a de Polignac number, because 140311983 - 2¹ = 140311981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140311983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140311981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10288 + ... + 19658.

It is an arithmetic number, because the mean of its divisors is an integer number (7197696).

Almost surely, 2^140311983 is an apocalyptic number.

140311983 is a deficient number, since it is larger than the sum of its proper divisors (90014289).

140311983 is a wasteful number, since it uses less digits than its factorization.

140311983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9435.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 140311983 is about 11845.3359175669. The cubic root of 140311983 is about 519.6348311457.

The spelling of 140311983 in words is "one hundred forty million, three hundred eleven thousand, nine hundred eighty-three".