2312540 has 24 divisors (see below), whose sum is σ = 4971120. Its totient is φ = 903168.

The previous prime is 2312539. The next prime is 2312573. The reversal of 2312540 is 452132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485 + ... + 2204.

It is an arithmetic number, because the mean of its divisors is an integer number (207130).

2^2312540 is an apocalyptic number.

2312540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2312540 is an abundant number, since it is smaller than the sum of its proper divisors (2658580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2312540 is a wasteful number, since it uses less digits than its factorization.

2312540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2741 (or 2739 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2312540 is about 1520.7037844367. The cubic root of 2312540 is about 132.2400742739.

Adding to 2312540 its reverse (452132), we get a palindrome (2764672).

It can be divided in two parts, 23 and 12540, that multiplied together give a triangular number (288420 = T₇₅₉).

The spelling of 2312540 in words is "two million, three hundred twelve thousand, five hundred forty".