31210041000421 has 8 divisors (see below), whose sum is σ = 32219636228504. Its totient is φ = 30209186856960.

The previous prime is 31210041000403. The next prime is 31210041000449. The reversal of 31210041000421 is 12400014001213.

It can be written as a sum of positive squares in 4 ways, for example, as 6915138012225 + 24294902988196 = 2629665^2 + 4928986^2 .

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 31210041000421 - 2⁹ = 31210040999909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31210041000451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2185263900 + ... + 2185278181.

It is an arithmetic number, because the mean of its divisors is an integer number (4027454528563).

Almost surely, 2^{31210041000421} is an apocalyptic number.

It is an amenable number.

31210041000421 is a deficient number, since it is larger than the sum of its proper divisors (1009595228083).

31210041000421 is a wasteful number, since it uses less digits than its factorization.

31210041000421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4370542311.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 31210041000421 its reverse (12400014001213), we get a palindrome (43610055001634).

The spelling of 31210041000421 in words is "thirty-one trillion, two hundred ten billion, forty-one million, four hundred twenty-one", and thus it is an aban number.