31033230331121 has 4 divisors (see below), whose sum is σ = 31618762978932. Its totient is φ = 30447697683312.

The previous prime is 31033230331099. The next prime is 31033230331163. The reversal of 31033230331121 is 12113303233013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27949831297600 + 3083399033521 = 5286760^2 + 1755961^2 .

It is a cyclic number.

It is not a de Polignac number, because 31033230331121 - 2⁴² = 26635183820017 is a prime.

It is a super-2 number, since 2×31033230331121² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31033230331171) 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, 292766323826 + ... + 292766323931.

It is an arithmetic number, because the mean of its divisors is an integer number (7904690744733).

Almost surely, 2^{31033230331121} is an apocalyptic number.

It is an amenable number.

31033230331121 is a deficient number, since it is larger than the sum of its proper divisors (585532647811).

31033230331121 is an equidigital number, since it uses as much as digits as its factorization.

31033230331121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585532647810.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 31033230331121 its reverse (12113303233013), we get a palindrome (43146533564134).

The spelling of 31033230331121 in words is "thirty-one trillion, thirty-three billion, two hundred thirty million, three hundred thirty-one thousand, one hundred twenty-one".