31313123030 has 16 divisors (see below), whose sum is σ = 64415567520. Its totient is φ = 10735927872.

The previous prime is 31313123029. The next prime is 31313123047. The reversal of 31313123030 is 3032131313.

It is a junction number, because it is equal to n+sod(n) for n = 31313122993 and 31313123011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223665095 + ... + 223665234.

It is an arithmetic number, because the mean of its divisors is an integer number (4025972970).

Almost surely, 2^31313123030 is an apocalyptic number.

31313123030 is an abundant number, since it is smaller than the sum of its proper divisors (33102444490).

31313123030 is a wasteful number, since it uses less digits than its factorization.

31313123030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447330343.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 31313123030 its reverse (3032131313), we get a palindrome (34345254343).

The spelling of 31313123030 in words is "thirty-one billion, three hundred thirteen million, one hundred twenty-three thousand, thirty".