291313968 has 40 divisors (see below), whose sum is σ = 820977216. Its totient is φ = 88276800.

The previous prime is 291313963. The next prime is 291314003. The reversal of 291313968 is 869313192.

It is not an unprimeable number, because it can be changed into a prime (291313963) 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, 275338 + ... + 276393.

Almost surely, 2^291313968 is an apocalyptic number.

It is an amenable number.

291313968 is an abundant number, since it is smaller than the sum of its proper divisors (529663248).

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

291313968 is a wasteful number, since it uses less digits than its factorization.

291313968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551753 (or 551747 counting only the distinct ones).

The product of its digits is 69984, while the sum is 42.

The square root of 291313968 is about 17067.9221934013. The cubic root of 291313968 is about 662.9087776506.

The spelling of 291313968 in words is "two hundred ninety-one million, three hundred thirteen thousand, nine hundred sixty-eight".