1031121023 has 2 divisors, whose sum is σ = 1031121024. Its totient is φ = 1031121022.

The previous prime is 1031120983. The next prime is 1031121029. The reversal of 1031121023 is 3201211301.

It is a strong prime.

It is an emirp because it is prime and its reverse (3201211301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1031121023 - 2¹⁸ = 1030858879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1031120989 and 1031121007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031121029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515560511 + 515560512.

It is an arithmetic number, because the mean of its divisors is an integer number (515560512).

Almost surely, 2^1031121023 is an apocalyptic number.

1031121023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031121023 is an equidigital number, since it uses as much as digits as its factorization.

1031121023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1031121023 is about 32111.0732147027. The cubic root of 1031121023 is about 1010.2678840448.

Adding to 1031121023 its reverse (3201211301), we get a palindrome (4232332324).

The spelling of 1031121023 in words is "one billion, thirty-one million, one hundred twenty-one thousand, twenty-three".