1230403011 has 4 divisors (see below), whose sum is σ = 1640537352. Its totient is φ = 820268672.

The previous prime is 1230402997. The next prime is 1230403037. The reversal of 1230403011 is 1103040321.

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 1230403011 - 2¹⁰ = 1230401987 is a prime.

It is a super-2 number, since 2×1230403011² = 3027783138955732242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1230403081) 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, 205067166 + ... + 205067171.

It is an arithmetic number, because the mean of its divisors is an integer number (410134338).

Almost surely, 2^1230403011 is an apocalyptic number.

1230403011 is a deficient number, since it is larger than the sum of its proper divisors (410134341).

1230403011 is an equidigital number, since it uses as much as digits as its factorization.

1230403011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410134340.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1230403011 is about 35077.1009491948. The cubic root of 1230403011 is about 1071.5582765921.

Adding to 1230403011 its reverse (1103040321), we get a palindrome (2333443332).

The spelling of 1230403011 in words is "one billion, two hundred thirty million, four hundred three thousand, eleven".