31140010 has 32 divisors (see below), whose sum is σ = 61642944. Its totient is φ = 11232000.

The previous prime is 31139981. The next prime is 31140029. The reversal of 31140010 is 1004113.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13330 + ... + 15490.

It is an arithmetic number, because the mean of its divisors is an integer number (1926342).

Almost surely, 2^31140010 is an apocalyptic number.

31140010 is a deficient number, since it is larger than the sum of its proper divisors (30502934).

31140010 is a wasteful number, since it uses less digits than its factorization.

31140010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 31140010 is about 5580.3234673270. The cubic root of 31140010 is about 314.6102848226.

Adding to 31140010 its reverse (1004113), we get a palindrome (32144123).

It can be divided in two parts, 31 and 140010, that added together give a palindrome (140041).

The spelling of 31140010 in words is "thirty-one million, one hundred forty thousand, ten".