1020031145 has 32 divisors (see below), whose sum is σ = 1427532288. Its totient is φ = 685283328.

The previous prime is 1020031141. The next prime is 1020031183. The reversal of 1020031145 is 5411300201.

1020031145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1020031145 - 2² = 1020031141 is a prime.

It is a super-2 number, since 2×1020031145² = 2080927073540022050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1020031141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 348227 + ... + 351143.

It is an arithmetic number, because the mean of its divisors is an integer number (44610384).

Almost surely, 2^1020031145 is an apocalyptic number.

It is an amenable number.

1020031145 is a deficient number, since it is larger than the sum of its proper divisors (407501143).

1020031145 is a wasteful number, since it uses less digits than its factorization.

1020031145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3129.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1020031145 is about 31937.9264355092. The cubic root of 1020031145 is about 1006.6329549670.

Adding to 1020031145 its reverse (5411300201), we get a palindrome (6431331346).

The spelling of 1020031145 in words is "one billion, twenty million, thirty-one thousand, one hundred forty-five".