31301040000021 has 16 divisors (see below), whose sum is σ = 45530564943360. Its totient is φ = 18969585819120.

The previous prime is 31301040000011. The next prime is 31301040000047. The reversal of 31301040000021 is 12000004010313.

It is not a de Polignac number, because 31301040000021 - 2⁷ = 31301039999893 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31301040000001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17678641 + ... + 19368438.

It is an arithmetic number, because the mean of its divisors is an integer number (2845660308960).

Almost surely, 2^{31301040000021} is an apocalyptic number.

It is an amenable number.

31301040000021 is a deficient number, since it is larger than the sum of its proper divisors (14229524943339).

31301040000021 is a wasteful number, since it uses less digits than its factorization.

31301040000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37072696.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31301040000021 its reverse (12000004010313), we get a palindrome (43301044010334).

The spelling of 31301040000021 in words is "thirty-one trillion, three hundred one billion, forty million, twenty-one", and thus it is an aban number.