31000211003112 has 64 divisors (see below), whose sum is σ = 86154432591360. Its totient is φ = 9230832057600.

The previous prime is 31000211003077. The next prime is 31000211003141. The reversal of 31000211003112 is 21130011200013.

It is a happy number.

It is a super-2 number, since 2×31000211003112² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31000211003091 and 31000211003100.

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, 1602565339 + ... + 1602584682.

It is an arithmetic number, because the mean of its divisors is an integer number (1346163009240).

Almost surely, 2^{31000211003112} is an apocalyptic number.

It is an amenable number.

31000211003112 is an abundant number, since it is smaller than the sum of its proper divisors (55154221588248).

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

31000211003112 is a wasteful number, since it uses less digits than its factorization.

31000211003112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3205150074 (or 3205150070 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 31000211003112 its reverse (21130011200013), we get a palindrome (52130222203125).

The spelling of 31000211003112 in words is "thirty-one trillion, two hundred eleven million, three thousand, one hundred twelve".