10312140 has 24 divisors (see below), whose sum is σ = 28874160. Its totient is φ = 2749888.

The previous prime is 10312123. The next prime is 10312147. The reversal of 10312140 is 4121301.

10312140 = T₄₃₃ + T₄₃₄ + ... + T₅₂₂.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (10312147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85875 + ... + 85994.

It is an arithmetic number, because the mean of its divisors is an integer number (1203090).

Almost surely, 2^10312140 is an apocalyptic number.

10312140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10312140 is an abundant number, since it is smaller than the sum of its proper divisors (18562020).

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

10312140 is a wasteful number, since it uses less digits than its factorization.

10312140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171881 (or 171879 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 10312140 is about 3211.2520922531. The cubic root of 10312140 is about 217.6621594244.

Adding to 10312140 its reverse (4121301), we get a palindrome (14433441).

The spelling of 10312140 in words is "ten million, three hundred twelve thousand, one hundred forty".