31220440014012 has 12 divisors (see below), whose sum is σ = 72847693366056. Its totient is φ = 10406813338000.

The previous prime is 31220440014007. The next prime is 31220440014017. The reversal of 31220440014012 is 21041004402213.

It is an interprime number because it is at equal distance from previous prime (31220440014007) and next prime (31220440014017).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×31220440014012² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31220440014017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1300851667239 + ... + 1300851667262.

It is an arithmetic number, because the mean of its divisors is an integer number (6070641113838).

Almost surely, 2^{31220440014012} is an apocalyptic number.

It is an amenable number.

31220440014012 is an abundant number, since it is smaller than the sum of its proper divisors (41627253352044).

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

31220440014012 is a wasteful number, since it uses less digits than its factorization.

31220440014012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2601703334508 (or 2601703334506 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 31220440014012 its reverse (21041004402213), we get a palindrome (52261444416225).

The spelling of 31220440014012 in words is "thirty-one trillion, two hundred twenty billion, four hundred forty million, fourteen thousand, twelve".