1423401111 has 24 divisors (see below), whose sum is σ = 2244547344. Its totient is φ = 862047360.

The previous prime is 1423401101. The next prime is 1423401121. The reversal of 1423401111 is 1111043241.

It is an interprime number because it is at equal distance from previous prime (1423401101) and next prime (1423401121).

It is not a de Polignac number, because 1423401111 - 2⁵ = 1423401079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423401101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159705 + ... + 168381.

It is an arithmetic number, because the mean of its divisors is an integer number (93522806).

Almost surely, 2^1423401111 is an apocalyptic number.

1423401111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1423401111 is a deficient number, since it is larger than the sum of its proper divisors (821146233).

1423401111 is a wasteful number, since it uses less digits than its factorization.

1423401111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10351 (or 10348 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1423401111 is about 37727.9884303417. The cubic root of 1423401111 is about 1124.8875241626.

Adding to 1423401111 its reverse (1111043241), we get a palindrome (2534444352).

The spelling of 1423401111 in words is "one billion, four hundred twenty-three million, four hundred one thousand, one hundred eleven".