31003100212 has 12 divisors (see below), whose sum is σ = 62006200480. Its totient is φ = 13287042936.

The previous prime is 31003100203. The next prime is 31003100221. The reversal of 31003100212 is 21200130013.

It is an interprime number because it is at equal distance from previous prime (31003100203) and next prime (31003100221).

31003100212 is an admirable number.

It is a super-2 number, since 2×31003100212² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31003100192 and 31003100201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553626762 + ... + 553626817.

Almost surely, 2^31003100212 is an apocalyptic number.

It is an amenable number.

31003100212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31003100212 is a wasteful number, since it uses less digits than its factorization.

31003100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107253590 (or 1107253588 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 31003100212 its reverse (21200130013), we get a palindrome (52203230225).

The spelling of 31003100212 in words is "thirty-one billion, three million, one hundred thousand, two hundred twelve".