1423270431 has 24 divisors (see below), whose sum is σ = 2254144464. Its totient is φ = 858197760.

The previous prime is 1423270397. The next prime is 1423270441. The reversal of 1423270431 is 1340723241.

It is a happy number.

It is not a de Polignac number, because 1423270431 - 2⁶ = 1423270367 is a prime.

It is a super-2 number, since 2×1423270431² = 4051397439517851522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1423270395 and 1423270404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423270441) 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, 16986 + ... + 55991.

It is an arithmetic number, because the mean of its divisors is an integer number (93922686).

Almost surely, 2^1423270431 is an apocalyptic number.

1423270431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1423270431 is a deficient number, since it is larger than the sum of its proper divisors (830874033).

1423270431 is a wasteful number, since it uses less digits than its factorization.

1423270431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73191 (or 73188 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 1423270431 is about 37726.2565198298. The cubic root of 1423270431 is about 1124.8530984482.

Adding to 1423270431 its reverse (1340723241), we get a palindrome (2763993672).

The spelling of 1423270431 in words is "one billion, four hundred twenty-three million, two hundred seventy thousand, four hundred thirty-one".