140311146 has 32 divisors (see below), whose sum is σ = 290631168. Its totient is φ = 45112320.

The previous prime is 140311139. The next prime is 140311147. The reversal of 140311146 is 641113041.

It is not an unprimeable number, because it can be changed into a prime (140311147) 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, 64590 + ... + 66726.

It is an arithmetic number, because the mean of its divisors is an integer number (9082224).

Almost surely, 2^140311146 is an apocalyptic number.

140311146 is an abundant number, since it is smaller than the sum of its proper divisors (150320022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140311146 is a wasteful number, since it uses less digits than its factorization.

140311146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 140311146 is about 11845.3005871527. The cubic root of 140311146 is about 519.6337978882.

Adding to 140311146 its reverse (641113041), we get a palindrome (781424187).

The spelling of 140311146 in words is "one hundred forty million, three hundred eleven thousand, one hundred forty-six".