7311997 has 8 divisors (see below), whose sum is σ = 9116352. Its totient is φ = 5697600.

The previous prime is 7311991. The next prime is 7312007. The reversal of 7311997 is 7991137.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7311997 - 2¹⁵ = 7279229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7311991) 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, 47404 + ... + 47557.

It is an arithmetic number, because the mean of its divisors is an integer number (1139544).

Almost surely, 2^7311997 is an apocalyptic number.

7311997 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

7311997 is a deficient number, since it is larger than the sum of its proper divisors (1804355).

7311997 is a wasteful number, since it uses less digits than its factorization.

7311997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94979.

The product of its digits is 11907, while the sum is 37.

The square root of 7311997 is about 2704.0704502657. The cubic root of 7311997 is about 194.0939513758.

The spelling of 7311997 in words is "seven million, three hundred eleven thousand, nine hundred ninety-seven".