3121142040 has 96 divisors (see below), whose sum is σ = 10150751520. Its totient is φ = 831727104.

The previous prime is 3121142039. The next prime is 3121142041. The reversal of 3121142040 is 402411213.

3121142040 is a `hidden beast` number, since 31 + 211 + 420 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (3121142039) and next prime (3121142041).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121142041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 859669 + ... + 863291.

It is an arithmetic number, because the mean of its divisors is an integer number (105736995).

Almost surely, 2^3121142040 is an apocalyptic number.

3121142040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3121142040 is an abundant number, since it is smaller than the sum of its proper divisors (7029609480).

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

3121142040 is a wasteful number, since it uses less digits than its factorization.

3121142040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6033 (or 6026 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 3121142040 is about 55867.1821376378. The cubic root of 3121142040 is about 1461.4069817004.

Adding to 3121142040 its reverse (402411213), we get a palindrome (3523553253).

It can be divided in two parts, 3121 and 142040, that added together give a square (145161 = 381²).

The spelling of 3121142040 in words is "three billion, one hundred twenty-one million, one hundred forty-two thousand, forty".