11430123309 has 72 divisors (see below), whose sum is σ = 19080524736. Its totient is φ = 6575817600.

The previous prime is 11430123283. The next prime is 11430123323. The reversal of 11430123309 is 90332103411.

It is not a de Polignac number, because 11430123309 - 2¹⁶ = 11430057773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11430123329) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3429774 + ... + 3433104.

It is an arithmetic number, because the mean of its divisors is an integer number (265007288).

Almost surely, 2^11430123309 is an apocalyptic number.

It is an amenable number.

11430123309 is a deficient number, since it is larger than the sum of its proper divisors (7650401427).

11430123309 is a wasteful number, since it uses less digits than its factorization.

11430123309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3519 (or 3505 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The spelling of 11430123309 in words is "eleven billion, four hundred thirty million, one hundred twenty-three thousand, three hundred nine".