140813971 has 6 divisors (see below), whose sum is σ = 144724020. Its totient is φ = 137006856.

The previous prime is 140813963. The next prime is 140813977. The reversal of 140813971 is 179318041.

It is not a de Polignac number, because 140813971 - 2³ = 140813963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140813977) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50061 + ... + 52798.

It is an arithmetic number, because the mean of its divisors is an integer number (24120670).

Almost surely, 2^140813971 is an apocalyptic number.

140813971 is a deficient number, since it is larger than the sum of its proper divisors (3910049).

140813971 is an equidigital number, since it uses as much as digits as its factorization.

140813971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102933 (or 102896 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 140813971 is about 11866.5062676426. The cubic root of 140813971 is about 520.2537851441.

The spelling of 140813971 in words is "one hundred forty million, eight hundred thirteen thousand, nine hundred seventy-one".