31112221101230 has 64 divisors (see below), whose sum is σ = 58526927889408. Its totient is φ = 11896171297920.

The previous prime is 31112221101173. The next prime is 31112221101253. The reversal of 31112221101230 is 3210112221113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 496548584 + ... + 496611236.

It is an arithmetic number, because the mean of its divisors is an integer number (914483248272).

Almost surely, 2^{31112221101230} is an apocalyptic number.

31112221101230 is a deficient number, since it is larger than the sum of its proper divisors (27414706788178).

31112221101230 is a wasteful number, since it uses less digits than its factorization.

31112221101230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87321.

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

Adding to 31112221101230 its reverse (3210112221113), we get a palindrome (34322333322343).

The spelling of 31112221101230 in words is "thirty-one trillion, one hundred twelve billion, two hundred twenty-one million, one hundred one thousand, two hundred thirty".