20120313031 has 8 divisors (see below), whose sum is σ = 24763462304. Its totient is φ = 15919368480.

The previous prime is 20120313019. The next prime is 20120313043. The reversal of 20120313031 is 13031302102.

It is an interprime number because it is at equal distance from previous prime (20120313019) and next prime (20120313043).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20120313031 - 2⁵ = 20120312999 is a prime.

It is a super-2 number, since 2×20120313031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20120312996 and 20120313014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120316031) by changing a digit.

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, 110551080 + ... + 110551261.

It is an arithmetic number, because the mean of its divisors is an integer number (3095432788).

Almost surely, 2^20120313031 is an apocalyptic number.

20120313031 is a deficient number, since it is larger than the sum of its proper divisors (4643149273).

20120313031 is a wasteful number, since it uses less digits than its factorization.

20120313031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221102361.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20120313031 its reverse (13031302102), we get a palindrome (33151615133).

The spelling of 20120313031 in words is "twenty billion, one hundred twenty million, three hundred thirteen thousand, thirty-one".