31140424002 has 32 divisors (see below), whose sum is σ = 62750920320. Its totient is φ = 10302091520.

The previous prime is 31140423959. The next prime is 31140424009. The reversal of 31140424002 is 20042404113.

It is a self number, because there is not a number n which added to its sum of digits gives 31140424002.

It is not an unprimeable number, because it can be changed into a prime (31140424009) 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 15 ways as a sum of consecutive naturals, for example, 387802 + ... + 461162.

It is an arithmetic number, because the mean of its divisors is an integer number (1960966260).

Almost surely, 2^31140424002 is an apocalyptic number.

31140424002 is an abundant number, since it is smaller than the sum of its proper divisors (31610496318).

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

31140424002 is a wasteful number, since it uses less digits than its factorization.

31140424002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73898.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 31140424002 its reverse (20042404113), we get a palindrome (51182828115).

The spelling of 31140424002 in words is "thirty-one billion, one hundred forty million, four hundred twenty-four thousand, two".