31023221011012 has 24 divisors (see below), whose sum is σ = 54348602882112. Its totient is φ = 15495049970400.

The previous prime is 31023221010983. The next prime is 31023221011031. The reversal of 31023221011012 is 21011012232013.

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, 113676562 + ... + 113949142.

It is an arithmetic number, because the mean of its divisors is an integer number (2264525120088).

Almost surely, 2^{31023221011012} is an apocalyptic number.

It is an amenable number.

31023221011012 is a deficient number, since it is larger than the sum of its proper divisors (23325381871100).

31023221011012 is a wasteful number, since it uses less digits than its factorization.

31023221011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302859 (or 302857 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31023221011012 its reverse (21011012232013), we get a palindrome (52034233243025).

The spelling of 31023221011012 in words is "thirty-one trillion, twenty-three billion, two hundred twenty-one million, eleven thousand, twelve".