1031230210421 has 4 divisors (see below), whose sum is σ = 1091890811052. Its totient is φ = 970569609792.

The previous prime is 1031230210321. The next prime is 1031230210487. The reversal of 1031230210421 is 1240120321301.

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

It can be written as a sum of positive squares in 2 ways, for example, as 552213958321 + 479016252100 = 743111^2 + 692110^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031230210421 - 2¹⁸ = 1031229948277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031230210393 and 1031230210402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031230210321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30330300290 + ... + 30330300323.

It is an arithmetic number, because the mean of its divisors is an integer number (272972702763).

Almost surely, 2^{1031230210421} is an apocalyptic number.

It is an amenable number.

1031230210421 is a deficient number, since it is larger than the sum of its proper divisors (60660600631).

1031230210421 is an equidigital number, since it uses as much as digits as its factorization.

1031230210421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60660600630.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1031230210421 its reverse (1240120321301), we get a palindrome (2271350531722).

The spelling of 1031230210421 in words is "one trillion, thirty-one billion, two hundred thirty million, two hundred ten thousand, four hundred twenty-one".