11430881 has 16 divisors (see below), whose sum is σ = 14525568. Its totient is φ = 8736000.

The previous prime is 11430863. The next prime is 11430883. The reversal of 11430881 is 18803411.

It is not a de Polignac number, because 11430881 - 2¹⁸ = 11168737 is a prime.

It is a super-2 number, since 2×11430881² = 261330080872322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11430881.

It is not an unprimeable number, because it can be changed into a prime (11430883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2681 + ... + 5481.

It is an arithmetic number, because the mean of its divisors is an integer number (907848).

Almost surely, 2^11430881 is an apocalyptic number.

11430881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11430881 is a deficient number, since it is larger than the sum of its proper divisors (3094687).

11430881 is a wasteful number, since it uses less digits than its factorization.

11430881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2872.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 11430881 is about 3380.9585918789. The cubic root of 11430881 is about 225.2647484413.

The spelling of 11430881 in words is "eleven million, four hundred thirty thousand, eight hundred eighty-one".