315402061 has 4 divisors (see below), whose sum is σ = 339663772. Its totient is φ = 291140352.

The previous prime is 315402047. The next prime is 315402067. The reversal of 315402061 is 160204513.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78057225 + 237344836 = 8835^2 + 15406^2 .

It is a cyclic number.

It is not a de Polignac number, because 315402061 - 2⁹ = 315401549 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 (315402067) 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, 12130836 + ... + 12130861.

It is an arithmetic number, because the mean of its divisors is an integer number (84915943).

Almost surely, 2^315402061 is an apocalyptic number.

It is an amenable number.

315402061 is a deficient number, since it is larger than the sum of its proper divisors (24261711).

315402061 is a wasteful number, since it uses less digits than its factorization.

315402061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24261710.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 315402061 is about 17759.5625227650. The cubic root of 315402061 is about 680.6985763559.

Adding to 315402061 its reverse (160204513), we get a palindrome (475606574).

The spelling of 315402061 in words is "three hundred fifteen million, four hundred two thousand, sixty-one".