31111221314 has 8 divisors (see below), whose sum is σ = 49411939788. Its totient is φ = 14640574720.

The previous prime is 31111221311. The next prime is 31111221353. The reversal of 31111221314 is 41312211113.

It can be written as a sum of positive squares in 2 ways, for example, as 29706246025 + 1404975289 = 172355^2 + 37483^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31111221311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457517927 + ... + 457517994.

Almost surely, 2^31111221314 is an apocalyptic number.

31111221314 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

31111221314 is a deficient number, since it is larger than the sum of its proper divisors (18300718474).

31111221314 is a wasteful number, since it uses less digits than its factorization.

31111221314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915035940.

The product of its digits is 144, while the sum is 20.

Adding to 31111221314 its reverse (41312211113), we get a palindrome (72423432427).

The spelling of 31111221314 in words is "thirty-one billion, one hundred eleven million, two hundred twenty-one thousand, three hundred fourteen".