140020310 has 32 divisors (see below), whose sum is σ = 267775200. Its totient is φ = 52565760.

The previous prime is 140020271. The next prime is 140020327. The reversal of 140020310 is 13020041.

It is a happy number.

It is a super-2 number, since 2×140020310² = 39211374424992200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140020291 and 140020300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17330 + ... + 24090.

It is an arithmetic number, because the mean of its divisors is an integer number (8367975).

Almost surely, 2^140020310 is an apocalyptic number.

140020310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140020310 is a deficient number, since it is larger than the sum of its proper divisors (127754890).

140020310 is a wasteful number, since it uses less digits than its factorization.

140020310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6896.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 140020310 is about 11833.0177892201. The cubic root of 140020310 is about 519.2745183889.

Adding to 140020310 its reverse (13020041), we get a palindrome (153040351).

The spelling of 140020310 in words is "one hundred forty million, twenty thousand, three hundred ten".