1523223340 has 24 divisors (see below), whose sum is σ = 3199839552. Its totient is φ = 609085440.

The previous prime is 1523223337. The next prime is 1523223367. The reversal of 1523223340 is 433223251.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58125 + ... + 80155.

It is an arithmetic number, because the mean of its divisors is an integer number (133326648).

Almost surely, 2^1523223340 is an apocalyptic number.

1523223340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1523223340 is an abundant number, since it is smaller than the sum of its proper divisors (1676616212).

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

1523223340 is a wasteful number, since it uses less digits than its factorization.

1523223340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25497 (or 25495 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 1523223340 is about 39028.4939499336. The cubic root of 1523223340 is about 1150.5915897586.

Adding to 1523223340 its reverse (433223251), we get a palindrome (1956446591).

The spelling of 1523223340 in words is "one billion, five hundred twenty-three million, two hundred twenty-three thousand, three hundred forty".