31234121012 has 24 divisors (see below), whose sum is σ = 58059932616. Its totient is φ = 14651440128.

The previous prime is 31234120999. The next prime is 31234121057. The reversal of 31234121012 is 21012143213.

It can be written as a sum of positive squares in 4 ways, for example, as 1597121296 + 29636999716 = 39964^2 + 172154^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 712463 + ... + 755030.

It is an arithmetic number, because the mean of its divisors is an integer number (2419163859).

Almost surely, 2^31234121012 is an apocalyptic number.

It is an amenable number.

31234121012 is a deficient number, since it is larger than the sum of its proper divisors (26825811604).

31234121012 is a wasteful number, since it uses less digits than its factorization.

31234121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467827 (or 1467825 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31234121012 its reverse (21012143213), we get a palindrome (52246264225).

The spelling of 31234121012 in words is "thirty-one billion, two hundred thirty-four million, one hundred twenty-one thousand, twelve".