313322513501 has 4 divisors (see below), whose sum is σ = 313587817404. Its totient is φ = 313057209600.

The previous prime is 313322513473. The next prime is 313322513509. The reversal of 313322513501 is 105315223313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 105315223313 = 251 ⋅419582563.

It can be written as a sum of positive squares in 2 ways, for example, as 176643684100 + 136678829401 = 420290^2 + 369701^2 .

It is a cyclic number.

It is not a de Polignac number, because 313322513501 - 2³⁰ = 312248771677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313322513509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132650180 + ... + 132652541.

It is an arithmetic number, because the mean of its divisors is an integer number (78396954351).

Almost surely, 2^313322513501 is an apocalyptic number.

It is an amenable number.

313322513501 is a deficient number, since it is larger than the sum of its proper divisors (265303903).

313322513501 is a wasteful number, since it uses less digits than its factorization.

313322513501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265303902.

The product of its (nonzero) digits is 8100, while the sum is 29.

Adding to 313322513501 its reverse (105315223313), we get a palindrome (418637736814).

The spelling of 313322513501 in words is "three hundred thirteen billion, three hundred twenty-two million, five hundred thirteen thousand, five hundred one".