31112314420 has 24 divisors (see below), whose sum is σ = 71275484448. Its totient is φ = 11313568800.

The previous prime is 31112314403. The next prime is 31112314421. The reversal of 31112314420 is 2441321113.

It is a super-2 number, since 2×31112314420² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 31112314391 and 31112314400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112314421) 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, 70709586 + ... + 70710025.

It is an arithmetic number, because the mean of its divisors is an integer number (2969811852).

Almost surely, 2^31112314420 is an apocalyptic number.

It is an amenable number.

31112314420 is an abundant number, since it is smaller than the sum of its proper divisors (40163170028).

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

31112314420 is a wasteful number, since it uses less digits than its factorization.

31112314420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141419631 (or 141419629 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 31112314420 its reverse (2441321113), we get a palindrome (33553635533).

The spelling of 31112314420 in words is "thirty-one billion, one hundred twelve million, three hundred fourteen thousand, four hundred twenty".