351431441221112 has 64 divisors (see below), whose sum is σ = 753608721438720. Its totient is φ = 150505220907648.

The previous prime is 351431441221067. The next prime is 351431441221139. The reversal of 351431441221112 is 211122144134153.

It is a happy number.

It is a super-2 number, since 2×351431441221112² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1133337563 + ... + 1133647605.

It is an arithmetic number, because the mean of its divisors is an integer number (11775136272480).

Almost surely, 2^{351431441221112} is an apocalyptic number.

It is an amenable number.

351431441221112 is an abundant number, since it is smaller than the sum of its proper divisors (402177280217608).

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

351431441221112 is a wasteful number, since it uses less digits than its factorization.

351431441221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324540 (or 324536 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

Adding to 351431441221112 its reverse (211122144134153), we get a palindrome (562553585355265).

The spelling of 351431441221112 in words is "three hundred fifty-one trillion, four hundred thirty-one billion, four hundred forty-one million, two hundred twenty-one thousand, one hundred twelve".