31003404031212 has 24 divisors (see below), whose sum is σ = 74835802834800. Its totient is φ = 9978107044416.

The previous prime is 31003404031111. The next prime is 31003404031247. The reversal of 31003404031212 is 21213040430013.

It is a happy number.

It is a super-2 number, since 2×31003404031212² (a number of 28 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, 44545120387 + ... + 44545121082.

It is an arithmetic number, because the mean of its divisors is an integer number (3118158451450).

Almost surely, 2^{31003404031212} is an apocalyptic number.

It is an amenable number.

31003404031212 is an abundant number, since it is smaller than the sum of its proper divisors (43832398803588).

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

31003404031212 is a wasteful number, since it uses less digits than its factorization.

31003404031212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89090241505 (or 89090241503 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31003404031212 its reverse (21213040430013), we get a palindrome (52216444461225).

The spelling of 31003404031212 in words is "thirty-one trillion, three billion, four hundred four million, thirty-one thousand, two hundred twelve".