1031940909 has 24 divisors (see below), whose sum is σ = 1529865792. Its totient is φ = 670064640.

The previous prime is 1031940881. The next prime is 1031940941. The reversal of 1031940909 is 9090491301.

1031940909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1031940909 - 2⁷ = 1031940781 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031940109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43309 + ... + 62765.

It is an arithmetic number, because the mean of its divisors is an integer number (63744408).

Almost surely, 2^1031940909 is an apocalyptic number.

It is an amenable number.

1031940909 is a deficient number, since it is larger than the sum of its proper divisors (497924883).

1031940909 is a wasteful number, since it uses less digits than its factorization.

1031940909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19617 (or 19614 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 1031940909 is about 32123.8370840097. The cubic root of 1031940909 is about 1010.5355813805.

The spelling of 1031940909 in words is "one billion, thirty-one million, nine hundred forty thousand, nine hundred nine".