1131401423 has 16 divisors (see below), whose sum is σ = 1177651200. Its totient is φ = 1086190560.

The previous prime is 1131401407. The next prime is 1131401477. The reversal of 1131401423 is 3241041311.

It is a cyclic number.

It is not a de Polignac number, because 1131401423 - 2⁴ = 1131401407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131401395 and 1131401404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131401023) 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, 919973 + ... + 921201.

It is an arithmetic number, because the mean of its divisors is an integer number (73603200).

Almost surely, 2^1131401423 is an apocalyptic number.

1131401423 is a deficient number, since it is larger than the sum of its proper divisors (46249777).

1131401423 is a wasteful number, since it uses less digits than its factorization.

1131401423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1131401423 is about 33636.3110789516. The cubic root of 1131401423 is about 1042.0108478553.

Adding to 1131401423 its reverse (3241041311), we get a palindrome (4372442734).

The spelling of 1131401423 in words is "one billion, one hundred thirty-one million, four hundred one thousand, four hundred twenty-three".