1021030310231 has 4 divisors (see below), whose sum is σ = 1021969621632. Its totient is φ = 1020090998832.

The previous prime is 1021030310197. The next prime is 1021030310243. The reversal of 1021030310231 is 1320130301201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021030310231 is a prime.

It is a super-2 number, since 2×1021030310231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021032310231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469654070 + ... + 469656243.

It is an arithmetic number, because the mean of its divisors is an integer number (255492405408).

Almost surely, 2^{1021030310231} is an apocalyptic number.

1021030310231 is a deficient number, since it is larger than the sum of its proper divisors (939311401).

1021030310231 is an equidigital number, since it uses as much as digits as its factorization.

1021030310231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939311400.

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

Adding to 1021030310231 its reverse (1320130301201), we get a palindrome (2341160611432).

The spelling of 1021030310231 in words is "one trillion, twenty-one billion, thirty million, three hundred ten thousand, two hundred thirty-one".