1313023008 has 48 divisors (see below), whose sum is σ = 3760023456. Its totient is φ = 397885440.

The previous prime is 1313023003. The next prime is 1313023009. The reversal of 1313023008 is 8003203131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1313023003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 620641 + ... + 622752.

It is an arithmetic number, because the mean of its divisors is an integer number (78333822).

Almost surely, 2^1313023008 is an apocalyptic number.

It is an amenable number.

1313023008 is an abundant number, since it is smaller than the sum of its proper divisors (2447000448).

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

1313023008 is a wasteful number, since it uses less digits than its factorization.

1313023008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243417 (or 1243409 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1313023008 is about 36235.6593426972. The cubic root of 1313023008 is about 1095.0251957256.

Adding to 1313023008 its reverse (8003203131), we get a palindrome (9316226139).

The spelling of 1313023008 in words is "one billion, three hundred thirteen million, twenty-three thousand, eight".