1031233111009 has 2 divisors, whose sum is σ = 1031233111010. Its totient is φ = 1031233111008.

The previous prime is 1031233111003. The next prime is 1031233111049. The reversal of 1031233111009 is 9001113321301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1012086300625 + 19146810384 = 1006025^2 + 138372^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031233111009 - 2²³ = 1031224722401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1031233111003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515616555504 + 515616555505.

It is an arithmetic number, because the mean of its divisors is an integer number (515616555505).

Almost surely, 2^{1031233111009} is an apocalyptic number.

It is an amenable number.

1031233111009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031233111009 is an equidigital number, since it uses as much as digits as its factorization.

1031233111009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 25.

The spelling of 1031233111009 in words is "one trillion, thirty-one billion, two hundred thirty-three million, one hundred eleven thousand, nine".