31231310010121 has 8 divisors (see below), whose sum is σ = 34542737891144. Its totient is φ = 28049742046080.

The previous prime is 31231310010107. The next prime is 31231310010143. The reversal of 31231310010121 is 12101001313213.

It can be written as a sum of positive squares in 4 ways, for example, as 885104640000 + 30346205370121 = 940800^2 + 5508739^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 31231310010121 - 2¹³ = 31231310001929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31231310010191) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 32464978740 + ... + 32464979701.

It is an arithmetic number, because the mean of its divisors is an integer number (4317842236393).

Almost surely, 2^{31231310010121} is an apocalyptic number.

It is an amenable number.

31231310010121 is a deficient number, since it is larger than the sum of its proper divisors (3311427881023).

31231310010121 is a wasteful number, since it uses less digits than its factorization.

31231310010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64929958491.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 31231310010121 its reverse (12101001313213), we get a palindrome (43332311323334).

The spelling of 31231310010121 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred ten million, ten thousand, one hundred twenty-one".