31302320011412 has 6 divisors (see below), whose sum is σ = 54779060019978. Its totient is φ = 15651160005704.

The previous prime is 31302320011411. The next prime is 31302320011429. The reversal of 31302320011412 is 21411002320313.

It can be written as a sum of positive squares in only one way, i.e., 29448920942596 + 1853399068816 = 5426686^2 + 1361396^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31302320011411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3912790001423 + ... + 3912790001430.

It is an arithmetic number, because the mean of its divisors is an integer number (9129843336663).

Almost surely, 2^{31302320011412} is an apocalyptic number.

It is an amenable number.

31302320011412 is a deficient number, since it is larger than the sum of its proper divisors (23476740008566).

31302320011412 is a wasteful number, since it uses less digits than its factorization.

31302320011412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7825580002857 (or 7825580002855 counting only the distinct ones).

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

Adding to 31302320011412 its reverse (21411002320313), we get a palindrome (52713322331725).

The spelling of 31302320011412 in words is "thirty-one trillion, three hundred two billion, three hundred twenty million, eleven thousand, four hundred twelve".