693131 has 4 divisors (see below), whose sum is σ = 699600. Its totient is φ = 686664.

The previous prime is 693127. The next prime is 693137. The reversal of 693131 is 131396.

693131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 693131 - 2² = 693127 is a prime.

It is a super-2 number, since 2×693131² = 960861166322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 693097 and 693106.

It is not an unprimeable number, because it can be changed into a prime (693137) 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, 3071 + ... + 3288.

It is an arithmetic number, because the mean of its divisors is an integer number (174900).

2⁶⁹³¹³¹ is an apocalyptic number.

693131 is a deficient number, since it is larger than the sum of its proper divisors (6469).

693131 is a wasteful number, since it uses less digits than its factorization.

693131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6468.

The product of its digits is 486, while the sum is 23.

The square root of 693131 is about 832.5448936844. The cubic root of 693131 is about 88.4990158104.

The spelling of 693131 in words is "six hundred ninety-three thousand, one hundred thirty-one".