2031090516 has 144 divisors (see below), whose sum is σ = 6537148800. Its totient is φ = 517176576.

The previous prime is 2031090511. The next prime is 2031090527. The reversal of 2031090516 is 6150901302.

It is a self number, because there is not a number n which added to its sum of digits gives 2031090516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031090511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84315 + ... + 105693.

Almost surely, 2^2031090516 is an apocalyptic number.

2031090516 is a gapful number since it is divisible by the number (26) 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 2031090516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3268574400).

2031090516 is an abundant number, since it is smaller than the sum of its proper divisors (4506058284).

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

2031090516 is a wasteful number, since it uses less digits than its factorization.

2031090516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21438 (or 21433 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 2031090516 is about 45067.6215924471. The cubic root of 2031090516 is about 1266.4161087355.

Adding to 2031090516 its reverse (6150901302), we get a palindrome (8181991818).

The spelling of 2031090516 in words is "two billion, thirty-one million, ninety thousand, five hundred sixteen".