31124206212 has 48 divisors (see below), whose sum is σ = 81780916224. Its totient is φ = 9127332000.

The previous prime is 31124206159. The next prime is 31124206247. The reversal of 31124206212 is 21260242113.

It is a super-3 number, since 3×31124206212³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3798964 + ... + 3807147.

It is an arithmetic number, because the mean of its divisors is an integer number (1703769088).

Almost surely, 2^31124206212 is an apocalyptic number.

It is an amenable number.

31124206212 is an abundant number, since it is smaller than the sum of its proper divisors (50656710012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31124206212 is a wasteful number, since it uses less digits than its factorization.

31124206212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7606160 (or 7606158 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 31124206212 its reverse (21260242113), we get a palindrome (52384448325).

The spelling of 31124206212 in words is "thirty-one billion, one hundred twenty-four million, two hundred six thousand, two hundred twelve".