1031210032009 has 16 divisors (see below), whose sum is σ = 1171737129600. Its totient is φ = 902237567616.

The previous prime is 1031210032003. The next prime is 1031210032037. The reversal of 1031210032009 is 9002300121301.

It is a cyclic number.

It is not a de Polignac number, because 1031210032009 - 2³ = 1031210032001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031210032001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40672644 + ... + 40697989.

It is an arithmetic number, because the mean of its divisors is an integer number (73233570600).

Almost surely, 2^{1031210032009} is an apocalyptic number.

1031210032009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1031210032009 is a deficient number, since it is larger than the sum of its proper divisors (140527097591).

1031210032009 is a wasteful number, since it uses less digits than its factorization.

1031210032009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81370704.

The product of its (nonzero) digits is 324, while the sum is 22.

The spelling of 1031210032009 in words is "one trillion, thirty-one billion, two hundred ten million, thirty-two thousand, nine".