31245654212 has 12 divisors (see below), whose sum is σ = 54686701356. Its totient is φ = 15620882400.

The previous prime is 31245654157. The next prime is 31245654233. The reversal of 31245654212 is 21245654213.

It can be written as a sum of positive squares in 2 ways, for example, as 29848090756 + 1397563456 = 172766^2 + 37384^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449723 + ... + 514530.

It is an arithmetic number, because the mean of its divisors is an integer number (4557225113).

Almost surely, 2^31245654212 is an apocalyptic number.

It is an amenable number.

31245654212 is a deficient number, since it is larger than the sum of its proper divisors (23441047144).

31245654212 is a wasteful number, since it uses less digits than its factorization.

31245654212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972358 (or 972356 counting only the distinct ones).

The product of its digits is 57600, while the sum is 35.

Subtracting from 31245654212 its reverse (21245654213), we obtain a palindrome (9999999999).

The spelling of 31245654212 in words is "thirty-one billion, two hundred forty-five million, six hundred fifty-four thousand, two hundred twelve".