1031423121 has 12 divisors (see below), whose sum is σ = 1491658740. Its totient is φ = 686772960.

The previous prime is 1031423119. The next prime is 1031423123. The reversal of 1031423121 is 1213241301.

1031423121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1031423119) and next prime (1031423123).

It can be written as a sum of positive squares in 2 ways, for example, as 604422225 + 427000896 = 24585^2 + 20664^2 .

It is not a de Polignac number, because 1031423121 - 2¹ = 1031423119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1031423094 and 1031423103.

It is not an unprimeable number, because it can be changed into a prime (1031423123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62406 + ... + 77183.

It is an arithmetic number, because the mean of its divisors is an integer number (124304895).

Almost surely, 2^1031423121 is an apocalyptic number.

It is an amenable number.

1031423121 is a deficient number, since it is larger than the sum of its proper divisors (460235619).

1031423121 is a wasteful number, since it uses less digits than its factorization.

1031423121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140416 (or 140413 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1031423121 is about 32115.7768238603. The cubic root of 1031423121 is about 1010.3665372256.

Adding to 1031423121 its reverse (1213241301), we get a palindrome (2244664422).

The spelling of 1031423121 in words is "one billion, thirty-one million, four hundred twenty-three thousand, one hundred twenty-one".