31031444402 has 16 divisors (see below), whose sum is σ = 53199286272. Its totient is φ = 13298559360.

The previous prime is 31031444333. The next prime is 31031444407. The reversal of 31031444402 is 20444413013.

It is not an unprimeable number, because it can be changed into a prime (31031444407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370127 + ... + 446157.

It is an arithmetic number, because the mean of its divisors is an integer number (3324955392).

Almost surely, 2^31031444402 is an apocalyptic number.

31031444402 is a deficient number, since it is larger than the sum of its proper divisors (22167841870).

31031444402 is a wasteful number, since it uses less digits than its factorization.

31031444402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105193.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 31031444402 its reverse (20444413013), we get a palindrome (51475857415).

The spelling of 31031444402 in words is "thirty-one billion, thirty-one million, four hundred forty-four thousand, four hundred two".