31130423212 has 48 divisors (see below), whose sum is σ = 62917017408. Its totient is φ = 13201171200.

The previous prime is 31130423209. The next prime is 31130423221. The reversal of 31130423212 is 21232403113.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6889578 + ... + 6894094.

It is an arithmetic number, because the mean of its divisors is an integer number (1310771196).

Almost surely, 2^31130423212 is an apocalyptic number.

It is an amenable number.

31130423212 is an abundant number, since it is smaller than the sum of its proper divisors (31786594196).

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

31130423212 is a wasteful number, since it uses less digits than its factorization.

31130423212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7066 (or 7064 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31130423212 its reverse (21232403113), we get a palindrome (52362826325).

The spelling of 31130423212 in words is "thirty-one billion, one hundred thirty million, four hundred twenty-three thousand, two hundred twelve".