1031323420121 has 4 divisors (see below), whose sum is σ = 1032696687744. Its totient is φ = 1029950152500.

The previous prime is 1031323420091. The next prime is 1031323420157. The reversal of 1031323420121 is 1210243231301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1031323420121 - 2¹⁰ = 1031323419097 is a prime.

It is a super-3 number, since 3×1031323420121³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031323420181) 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, 686632685 + ... + 686634186.

It is an arithmetic number, because the mean of its divisors is an integer number (258174171936).

Almost surely, 2^{1031323420121} is an apocalyptic number.

It is an amenable number.

1031323420121 is a deficient number, since it is larger than the sum of its proper divisors (1373267623).

1031323420121 is an equidigital number, since it uses as much as digits as its factorization.

1031323420121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373267622.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1031323420121 its reverse (1210243231301), we get a palindrome (2241566651422).

It can be divided in two parts, 103132 and 3420121, that added together give a palindrome (3523253).

The spelling of 1031323420121 in words is "one trillion, thirty-one billion, three hundred twenty-three million, four hundred twenty thousand, one hundred twenty-one".