3131340 has 24 divisors (see below), whose sum is σ = 8767920. Its totient is φ = 835008.

The previous prime is 3131339. The next prime is 3131351. The reversal of 3131340 is 431313.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 26035 + ... + 26154.

It is an arithmetic number, because the mean of its divisors is an integer number (365330).

Almost surely, 2^3131340 is an apocalyptic number.

3131340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3131340 is an abundant number, since it is smaller than the sum of its proper divisors (5636580).

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

3131340 is a wasteful number, since it uses less digits than its factorization.

3131340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52201 (or 52199 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 3131340 is about 1769.5592671623. The cubic root of 3131340 is about 146.2996909093.

Adding to 3131340 its reverse (431313), we get a palindrome (3562653).

It can be divided in two parts, 313 and 1340, that added together give a triangular number (1653 = T₅₇).

The spelling of 3131340 in words is "three million, one hundred thirty-one thousand, three hundred forty".