2321977 has 4 divisors (see below), whose sum is σ = 2653696. Its totient is φ = 1990260.

The previous prime is 2321959. The next prime is 2321981. The reversal of 2321977 is 7791232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2321977 - 2¹¹ = 2319929 is a prime.

It is a Duffinian number.

2321977 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2321947) 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, 165849 + ... + 165862.

It is an arithmetic number, because the mean of its divisors is an integer number (663424).

2^2321977 is an apocalyptic number.

It is an amenable number.

2321977 is a deficient number, since it is larger than the sum of its proper divisors (331719).

2321977 is an equidigital number, since it uses as much as digits as its factorization.

2321977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331718.

The product of its digits is 5292, while the sum is 31.

The square root of 2321977 is about 1523.8034650177. The cubic root of 2321977 is about 132.4197116534.

It can be divided in two parts, 232 and 1977, that added together give a square (2209 = 47²).

The spelling of 2321977 in words is "two million, three hundred twenty-one thousand, nine hundred seventy-seven".