1423331340 has 48 divisors (see below), whose sum is σ = 4052885760. Its totient is φ = 373120960.

The previous prime is 1423331323. The next prime is 1423331407. The reversal of 1423331340 is 431333241.

It is a self number, because there is not a number n which added to its sum of digits gives 1423331340.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197496 + ... + 204575.

It is an arithmetic number, because the mean of its divisors is an integer number (84435120).

Almost surely, 2^1423331340 is an apocalyptic number.

1423331340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423331340 is an abundant number, since it is smaller than the sum of its proper divisors (2629554420).

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

1423331340 is a wasteful number, since it uses less digits than its factorization.

1423331340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402142 (or 402140 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 1423331340 is about 37727.0637606480. The cubic root of 1423331340 is about 1124.8691442861.

Adding to 1423331340 its reverse (431333241), we get a palindrome (1854664581).

The spelling of 1423331340 in words is "one billion, four hundred twenty-three million, three hundred thirty-one thousand, three hundred forty".