140148311 has 4 divisors (see below), whose sum is σ = 140217552. Its totient is φ = 140079072.

The previous prime is 140148259. The next prime is 140148317. The reversal of 140148311 is 113841041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140148311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140148317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31490 + ... + 35663.

It is an arithmetic number, because the mean of its divisors is an integer number (35054388).

Almost surely, 2^140148311 is an apocalyptic number.

140148311 is a deficient number, since it is larger than the sum of its proper divisors (69241).

140148311 is an equidigital number, since it uses as much as digits as its factorization.

140148311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69240.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 140148311 is about 11838.4251908774. The cubic root of 140148311 is about 519.4327035690.

Adding to 140148311 its reverse (113841041), we get a palindrome (253989352).

The spelling of 140148311 in words is "one hundred forty million, one hundred forty-eight thousand, three hundred eleven".