1023001011 has 6 divisors (see below), whose sum is σ = 1477668140. Its totient is φ = 682000668.

The previous prime is 1023001009. The next prime is 1023001033. The reversal of 1023001011 is 1101003201.

It is not a de Polignac number, because 1023001011 - 2¹ = 1023001009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 113666779 = 1023001011 / (1 + 0 + 2 + 3 + 0 + 0 + 1 + 0 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1023000984 and 1023001002.

It is not an unprimeable number, because it can be changed into a prime (1023001051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56833381 + ... + 56833398.

Almost surely, 2^1023001011 is an apocalyptic number.

1023001011 is a deficient number, since it is larger than the sum of its proper divisors (454667129).

1023001011 is a wasteful number, since it uses less digits than its factorization.

1023001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113666785 (or 113666782 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1023001011 is about 31984.3869880290. The cubic root of 1023001011 is about 1007.6089605426.

Adding to 1023001011 its reverse (1101003201), we get a palindrome (2124004212).

The spelling of 1023001011 in words is "one billion, twenty-three million, one thousand, eleven".