1211013023 has 8 divisors (see below), whose sum is σ = 1353327696. Its totient is φ = 1074068800.

The previous prime is 1211012821. The next prime is 1211013031. The reversal of 1211013023 is 3203101121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1211013023 - 2²⁰ = 1209964447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211012989 and 1211013007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211013823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1342136 + ... + 1343037.

It is an arithmetic number, because the mean of its divisors is an integer number (169165962).

Almost surely, 2^1211013023 is an apocalyptic number.

1211013023 is a deficient number, since it is larger than the sum of its proper divisors (142314673).

1211013023 is a wasteful number, since it uses less digits than its factorization.

1211013023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2685225.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1211013023 is about 34799.6123972667. The cubic root of 1211013023 is about 1065.8995311095.

Adding to 1211013023 its reverse (3203101121), we get a palindrome (4414114144).

The spelling of 1211013023 in words is "one billion, two hundred eleven million, thirteen thousand, twenty-three".