21030313001231 has 8 divisors (see below), whose sum is σ = 21755552270400. Its totient is φ = 20305077469600.

The previous prime is 21030313001141. The next prime is 21030313001233. The reversal of 21030313001231 is 13210031303012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21030313001231 is a prime.

It is a super-2 number, since 2×21030313001231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030313001233) 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, 15285881 + ... + 16604781.

It is an arithmetic number, because the mean of its divisors is an integer number (2719444033800).

Almost surely, 2^{21030313001231} is an apocalyptic number.

21030313001231 is a deficient number, since it is larger than the sum of its proper divisors (725239269169).

21030313001231 is a wasteful number, since it uses less digits than its factorization.

21030313001231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868769.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21030313001231 its reverse (13210031303012), we get a palindrome (34240344304243).

The spelling of 21030313001231 in words is "twenty-one trillion, thirty billion, three hundred thirteen million, one thousand, two hundred thirty-one".