31423123244 has 24 divisors (see below), whose sum is σ = 56277661440. Its totient is φ = 15343899984.

The previous prime is 31423123223. The next prime is 31423123253. The reversal of 31423123244 is 44232132413.

It is a super-2 number, since 2×31423123244² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2157017 + ... + 2171535.

It is an arithmetic number, because the mean of its divisors is an integer number (2344902560).

Almost surely, 2^31423123244 is an apocalyptic number.

It is an amenable number.

31423123244 is a deficient number, since it is larger than the sum of its proper divisors (24854538196).

31423123244 is a wasteful number, since it uses less digits than its factorization.

31423123244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27149 (or 27147 counting only the distinct ones).

The product of its digits is 13824, while the sum is 29.

Adding to 31423123244 its reverse (44232132413), we get a palindrome (75655255657).

The spelling of 31423123244 in words is "thirty-one billion, four hundred twenty-three million, one hundred twenty-three thousand, two hundred forty-four".