15313123408 has 20 divisors (see below), whose sum is σ = 32366374848. Its totient is φ = 6960510560.

The previous prime is 15313123393. The next prime is 15313123417. The reversal of 15313123408 is 80432131351.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 15313123408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43503016 + ... + 43503367.

Almost surely, 2^15313123408 is an apocalyptic number.

It is an amenable number.

15313123408 is an abundant number, since it is smaller than the sum of its proper divisors (17053251440).

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

15313123408 is a wasteful number, since it uses less digits than its factorization.

15313123408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87006402 (or 87006396 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 15313123408 its reverse (80432131351), we get a palindrome (95745254759).

The spelling of 15313123408 in words is "fifteen billion, three hundred thirteen million, one hundred twenty-three thousand, four hundred eight".