315203213261 has 8 divisors (see below), whose sum is σ = 318166035264. Its totient is φ = 312240706240.

The previous prime is 315203213239. The next prime is 315203213287. The reversal of 315203213261 is 162312302513.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 315203213261 - 2¹⁰ = 315203212237 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 (315203213761) 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, 2255456 + ... + 2391126.

It is an arithmetic number, because the mean of its divisors is an integer number (39770754408).

Almost surely, 2^315203213261 is an apocalyptic number.

It is an amenable number.

315203213261 is a deficient number, since it is larger than the sum of its proper divisors (2962822003).

315203213261 is a wasteful number, since it uses less digits than its factorization.

315203213261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157491.

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 315203213261 its reverse (162312302513), we get a palindrome (477515515774).

The spelling of 315203213261 in words is "three hundred fifteen billion, two hundred three million, two hundred thirteen thousand, two hundred sixty-one".