31130300312 has 32 divisors (see below), whose sum is σ = 62815979520. Its totient is φ = 14409392640.

The previous prime is 31130300281. The next prime is 31130300323. The reversal of 31130300312 is 21300303113.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

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, 1867928 + ... + 1884519.

It is an arithmetic number, because the mean of its divisors is an integer number (1962999360).

Almost surely, 2^31130300312 is an apocalyptic number.

It is an amenable number.

31130300312 is an abundant number, since it is smaller than the sum of its proper divisors (31685679208).

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

31130300312 is a wasteful number, since it uses less digits than its factorization.

31130300312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752531 (or 3752527 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 31130300312 its reverse (21300303113), we get a palindrome (52430603425).

The spelling of 31130300312 in words is "thirty-one billion, one hundred thirty million, three hundred thousand, three hundred twelve".