31313032102 has 16 divisors (see below), whose sum is σ = 51254873424. Its totient is φ = 14228928000.

The previous prime is 31313032097. The next prime is 31313032103. The reversal of 31313032102 is 20123031313.

It is a self number, because there is not a number n which added to its sum of digits gives 31313032102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31313032103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137799 + ... + 285682.

It is an arithmetic number, because the mean of its divisors is an integer number (3203429589).

Almost surely, 2^31313032102 is an apocalyptic number.

31313032102 is a deficient number, since it is larger than the sum of its proper divisors (19941841322).

31313032102 is a wasteful number, since it uses less digits than its factorization.

31313032102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426855.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31313032102 its reverse (20123031313), we get a palindrome (51436063415).

The spelling of 31313032102 in words is "thirty-one billion, three hundred thirteen million, thirty-two thousand, one hundred two".