1031000121 has 12 divisors (see below), whose sum is σ = 1523856048. Its totient is φ = 671348664.

The previous prime is 1031000107. The next prime is 1031000123. The reversal of 1031000121 is 1210001301.

It is not a de Polignac number, because 1031000121 - 2⁶ = 1031000057 is a prime.

It is a super-2 number, since 2×1031000121² = 2125922499004029282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1031000123) 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 11 ways as a sum of consecutive naturals, for example, 1331655 + ... + 1332428.

It is an arithmetic number, because the mean of its divisors is an integer number (126988004).

Almost surely, 2^1031000121 is an apocalyptic number.

It is an amenable number.

1031000121 is a deficient number, since it is larger than the sum of its proper divisors (492855927).

1031000121 is a wasteful number, since it uses less digits than its factorization.

1031000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2664132 (or 2664129 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1031000121 is about 32109.1906002004. The cubic root of 1031000121 is about 1010.2283968656.

Adding to 1031000121 its reverse (1210001301), we get a palindrome (2241001422).

The spelling of 1031000121 in words is "one billion, thirty-one million, one hundred twenty-one", and thus it is an aban number.