1123431654 has 8 divisors (see below), whose sum is σ = 2246863320. Its totient is φ = 374477216.

The previous prime is 1123431641. The next prime is 1123431671. The reversal of 1123431654 is 4561343211.

1123431654 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

1123431654 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93619299 + ... + 93619310.

It is an arithmetic number, because the mean of its divisors is an integer number (280857915).

Almost surely, 2^1123431654 is an apocalyptic number.

1123431654 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123431654 is a wasteful number, since it uses less digits than its factorization.

1123431654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187238614.

The product of its digits is 8640, while the sum is 30.

The square root of 1123431654 is about 33517.6319867618. The cubic root of 1123431654 is about 1039.5583843720.

Adding to 1123431654 its reverse (4561343211), we get a palindrome (5684774865).

The spelling of 1123431654 in words is "one billion, one hundred twenty-three million, four hundred thirty-one thousand, six hundred fifty-four".