31320214012 has 6 divisors (see below), whose sum is σ = 54810374528. Its totient is φ = 15660107004.

The previous prime is 31320214007. The next prime is 31320214031. The reversal of 31320214012 is 21041202313.

It is a happy number.

It is a super-2 number, since 2×31320214012² (a number of 22 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 3915026748 + ... + 3915026755.

Almost surely, 2^31320214012 is an apocalyptic number.

It is an amenable number.

31320214012 is a deficient number, since it is larger than the sum of its proper divisors (23490160516).

31320214012 is a wasteful number, since it uses less digits than its factorization.

31320214012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7830053507 (or 7830053505 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31320214012 its reverse (21041202313), we get a palindrome (52361416325).

The spelling of 31320214012 in words is "thirty-one billion, three hundred twenty million, two hundred fourteen thousand, twelve".