315401223040 has 128 divisors (see below), whose sum is σ = 815347036800. Its totient is φ = 116212727808.

The previous prime is 315401223017. The next prime is 315401223077. The reversal of 315401223040 is 40322104513.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 315401222996 and 315401223014.

It is a congruent number.

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, 202966 + ... + 819754.

It is an arithmetic number, because the mean of its divisors is an integer number (6369898725).

Almost surely, 2^315401223040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 315401223040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407673518400).

315401223040 is an abundant number, since it is smaller than the sum of its proper divisors (499945813760).

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

315401223040 is a wasteful number, since it uses less digits than its factorization.

315401223040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616872 (or 616860 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 315401223040 its reverse (40322104513), we get a palindrome (355723327553).

The spelling of 315401223040 in words is "three hundred fifteen billion, four hundred one million, two hundred twenty-three thousand, forty".