697031 has 4 divisors (see below), whose sum is σ = 701064. Its totient is φ = 693000.

The previous prime is 697019. The next prime is 697033. The reversal of 697031 is 130796.

It is a happy number.

697031 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 a de Polignac number, because none of the positive numbers 2^k-697031 is a prime.

It is a super-2 number, since 2×697031² = 971704429922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 697031.

It is not an unprimeable number, because it can be changed into a prime (697033) 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, 1745 + ... + 2106.

It is an arithmetic number, because the mean of its divisors is an integer number (175266).

2⁶⁹⁷⁰³¹ is an apocalyptic number.

697031 is a deficient number, since it is larger than the sum of its proper divisors (4033).

697031 is a wasteful number, since it uses less digits than its factorization.

697031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4032.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 697031 is about 834.8838242534. The cubic root of 697031 is about 88.6646895621.

The spelling of 697031 in words is "six hundred ninety-seven thousand, thirty-one".