140703981 has 16 divisors (see below), whose sum is σ = 204871680. Its totient is φ = 85187120.

The previous prime is 140703973. The next prime is 140704051. The reversal of 140703981 is 189307041.

It is a cyclic number.

It is not a de Polignac number, because 140703981 - 2³ = 140703973 is a prime.

It is a super-2 number, since 2×140703981² = 39595220538496722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140703931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46006 + ... + 48968.

It is an arithmetic number, because the mean of its divisors is an integer number (12804480).

Almost surely, 2^140703981 is an apocalyptic number.

140703981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140703981 is a deficient number, since it is larger than the sum of its proper divisors (64167699).

140703981 is a wasteful number, since it uses less digits than its factorization.

140703981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4416.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 140703981 is about 11861.8708895351. The cubic root of 140703981 is about 520.1182928611.

The spelling of 140703981 in words is "one hundred forty million, seven hundred three thousand, nine hundred eighty-one".