31231120112002 has 16 divisors (see below), whose sum is σ = 46889882184600. Its totient is φ = 15601165747200.

The previous prime is 31231120111931. The next prime is 31231120112011. The reversal of 31231120112002 is 20021102113213.

It can be written as a sum of positive squares in 4 ways, for example, as 30641217773401 + 589902338601 = 5535451^2 + 768051^2 .

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, 8241274 + ... + 11418442.

Almost surely, 2^{31231120112002} is an apocalyptic number.

31231120112002 is a deficient number, since it is larger than the sum of its proper divisors (15658762072598).

31231120112002 is a wasteful number, since it uses less digits than its factorization.

31231120112002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3181701.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31231120112002 its reverse (20021102113213), we get a palindrome (51252222225215).

The spelling of 31231120112002 in words is "thirty-one trillion, two hundred thirty-one billion, one hundred twenty million, one hundred twelve thousand, two".