1011330023231 has 4 divisors (see below), whose sum is σ = 1103269116264. Its totient is φ = 919390930200.

The previous prime is 1011330023213. The next prime is 1011330023237. The reversal of 1011330023231 is 1323200331101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1011330023231 - 2¹⁰ = 1011330022207 is a prime.

It is a super-2 number, since 2×1011330023231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011330023237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45969546500 + ... + 45969546521.

It is an arithmetic number, because the mean of its divisors is an integer number (275817279066).

Almost surely, 2^{1011330023231} is an apocalyptic number.

1011330023231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1011330023231 is a deficient number, since it is larger than the sum of its proper divisors (91939093033).

1011330023231 is an equidigital number, since it uses as much as digits as its factorization.

1011330023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91939093032.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1011330023231 its reverse (1323200331101), we get a palindrome (2334530354332).

The spelling of 1011330023231 in words is "one trillion, eleven billion, three hundred thirty million, twenty-three thousand, two hundred thirty-one".