31302211223012 has 6 divisors (see below), whose sum is σ = 54778869640278. Its totient is φ = 15651105611504.

The previous prime is 31302211222979. The next prime is 31302211223057. The reversal of 31302211223012 is 21032211220313.

It can be written as a sum of positive squares in only one way, i.e., 31263597400996 + 38613822016 = 5591386^2 + 196504^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3912776402873 + ... + 3912776402880.

It is an arithmetic number, because the mean of its divisors is an integer number (9129811606713).

Almost surely, 2^{31302211223012} is an apocalyptic number.

It is an amenable number.

31302211223012 is a deficient number, since it is larger than the sum of its proper divisors (23476658417266).

31302211223012 is a wasteful number, since it uses less digits than its factorization.

31302211223012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7825552805757 (or 7825552805755 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31302211223012 its reverse (21032211220313), we get a palindrome (52334422443325).

The spelling of 31302211223012 in words is "thirty-one trillion, three hundred two billion, two hundred eleven million, two hundred twenty-three thousand, twelve".