21032310001031 has 16 divisors (see below), whose sum is σ = 25455160329984. Its totient is φ = 16964376476544.

The previous prime is 21032310000931. The next prime is 21032310001033. The reversal of 21032310001031 is 13010001323012.

It is a de Polignac number, because none of the positive numbers 2^k-21032310001031 is a prime.

It is a super-2 number, since 2×21032310001031² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032310001033) 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, 14215145 + ... + 15624818.

It is an arithmetic number, because the mean of its divisors is an integer number (1590947520624).

Almost surely, 2^{21032310001031} is an apocalyptic number.

21032310001031 is a deficient number, since it is larger than the sum of its proper divisors (4422850328953).

21032310001031 is a wasteful number, since it uses less digits than its factorization.

21032310001031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29845910.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21032310001031 its reverse (13010001323012), we get a palindrome (34042311324043).

The spelling of 21032310001031 in words is "twenty-one trillion, thirty-two billion, three hundred ten million, one thousand, thirty-one".