1031421113 has 2 divisors, whose sum is σ = 1031421114. Its totient is φ = 1031421112.

The previous prime is 1031421109. The next prime is 1031421151. The reversal of 1031421113 is 3111241301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 864830464 + 166590649 = 29408^2 + 12907^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031421113 - 2² = 1031421109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1031421091 and 1031421100.

It is not a weakly prime, because it can be changed into another prime (1031421103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515710556 + 515710557.

It is an arithmetic number, because the mean of its divisors is an integer number (515710557).

Almost surely, 2^1031421113 is an apocalyptic number.

It is an amenable number.

1031421113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031421113 is an equidigital number, since it uses as much as digits as its factorization.

1031421113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1031421113 is about 32115.7455619514. The cubic root of 1031421113 is about 1010.3658815564.

Adding to 1031421113 its reverse (3111241301), we get a palindrome (4142662414).

The spelling of 1031421113 in words is "one billion, thirty-one million, four hundred twenty-one thousand, one hundred thirteen".