3121343040 has 56 divisors (see below), whose sum is σ = 9910267200. Its totient is φ = 832357888.

The previous prime is 3121343033. The next prime is 3121343053. The reversal of 3121343040 is 403431213.

It is a junction number, because it is equal to n+sod(n) for n = 3121342998 and 3121343016.

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, 1624740 + ... + 1626659.

Almost surely, 2^3121343040 is an apocalyptic number.

3121343040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3121343040 is an abundant number, since it is smaller than the sum of its proper divisors (6788924160).

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

3121343040 is a wasteful number, since it uses less digits than its factorization.

3121343040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251419 (or 3251409 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 3121343040 is about 55868.9810180927. The cubic root of 3121343040 is about 1461.4383523220.

Adding to 3121343040 its reverse (403431213), we get a palindrome (3524774253).

The spelling of 3121343040 in words is "three billion, one hundred twenty-one million, three hundred forty-three thousand, forty".