538632313 has 4 divisors (see below), whose sum is σ = 541423348. Its totient is φ = 535841280.

The previous prime is 538632287. The next prime is 538632323. The reversal of 538632313 is 313236835.

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 175615504 + 363016809 = 13252^2 + 19053^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538632313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538632323) 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, 1395228 + ... + 1395613.

It is an arithmetic number, because the mean of its divisors is an integer number (135355837).

Almost surely, 2^538632313 is an apocalyptic number.

It is an amenable number.

538632313 is a deficient number, since it is larger than the sum of its proper divisors (2791035).

538632313 is a wasteful number, since it uses less digits than its factorization.

538632313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791034.

The product of its digits is 38880, while the sum is 34.

The square root of 538632313 is about 23208.4534814365. The cubic root of 538632313 is about 813.6372086146.

The spelling of 538632313 in words is "five hundred thirty-eight million, six hundred thirty-two thousand, three hundred thirteen".