140312230 has 16 divisors (see below), whose sum is σ = 255064464. Its totient is φ = 55568800.

The previous prime is 140312219. The next prime is 140312281. The reversal of 140312230 is 32213041.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68452 + ... + 70471.

It is an arithmetic number, because the mean of its divisors is an integer number (15941529).

Almost surely, 2^140312230 is an apocalyptic number.

140312230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140312230 is a deficient number, since it is larger than the sum of its proper divisors (114752234).

140312230 is a wasteful number, since it uses less digits than its factorization.

140312230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139031.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 140312230 is about 11845.3463436068. The cubic root of 140312230 is about 519.6351360608.

Adding to 140312230 its reverse (32213041), we get a palindrome (172525271).

It can be divided in two parts, 14031 and 2230, that added together give a palindrome (16261).

The spelling of 140312230 in words is "one hundred forty million, three hundred twelve thousand, two hundred thirty".