920215317 has 16 divisors (see below), whose sum is σ = 1425222272. Its totient is φ = 517216320.

The previous prime is 920215267. The next prime is 920215369. The reversal of 920215317 is 713512029.

It is not a de Polignac number, because 920215317 - 2⁸ = 920215061 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 (920213317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357898 + ... + 360459.

It is an arithmetic number, because the mean of its divisors is an integer number (89076392).

Almost surely, 2^920215317 is an apocalyptic number.

It is an amenable number.

920215317 is a deficient number, since it is larger than the sum of its proper divisors (505006955).

920215317 is a wasteful number, since it uses less digits than its factorization.

920215317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718428.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 920215317 is about 30335.0509641899. The cubic root of 920215317 is about 972.6646952671.

The spelling of 920215317 in words is "nine hundred twenty million, two hundred fifteen thousand, three hundred seventeen".