3031689780 has 432 divisors, whose sum is σ = 11452896000. Its totient is φ = 645345792.

The previous prime is 3031689779. The next prime is 3031689797. The reversal of 3031689780 is 879861303.

It is a happy number.

It is a super-2 number, since 2×3031689780² = 18382285844312896800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 13238706 + ... + 13238934.

Almost surely, 2^3031689780 is an apocalyptic number.

3031689780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3031689780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5726448000).

3031689780 is an abundant number, since it is smaller than the sum of its proper divisors (8421206220).

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

3031689780 is a wasteful number, since it uses less digits than its factorization.

3031689780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 3031689780 is about 55060.7825952374. The cubic root of 3031689780 is about 1447.3100791567.

The spelling of 3031689780 in words is "three billion, thirty-one million, six hundred eighty-nine thousand, seven hundred eighty".