2340981 has 10 divisors (see below), whose sum is σ = 3497142. Its totient is φ = 1560600.

The previous prime is 2340979. The next prime is 2340983. The reversal of 2340981 is 1890432.

It is an interprime number because it is at equal distance from previous prime (2340979) and next prime (2340983).

It can be written as a sum of positive squares in only one way, i.e., 2340900 + 81 = 1530^2 + 9^2 .

It is not a de Polignac number, because 2340981 - 2¹ = 2340979 is a prime.

It is a super-2 number, since 2×2340981² = 10960384084722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2340983) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14370 + ... + 14531.

2^2340981 is an apocalyptic number.

It is an amenable number.

2340981 is a deficient number, since it is larger than the sum of its proper divisors (1156161).

2340981 is an equidigital number, since it uses as much as digits as its factorization.

2340981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28913 (or 28904 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2340981 is about 1530.0264703593. The cubic root of 2340981 is about 132.7799893943.

It can be divided in two parts, 23409 and 81, that multiplied together give a square (1896129 = 1377²).

The spelling of 2340981 in words is "two million, three hundred forty thousand, nine hundred eighty-one".