2151234316 has 108 divisors (see below), whose sum is σ = 4894334032. Its totient is φ = 809265600.

The previous prime is 2151234313. The next prime is 2151234317. The reversal of 2151234316 is 6134321512.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (2151234313) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16421571 + ... + 16421701.

Almost surely, 2^2151234316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2151234316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2447167016).

2151234316 is an abundant number, since it is smaller than the sum of its proper divisors (2743099716).

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

2151234316 is a wasteful number, since it uses less digits than its factorization.

2151234316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 188 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 2151234316 is about 46381.4005394404. The cubic root of 2151234316 is about 1290.9098234768.

Adding to 2151234316 its reverse (6134321512), we get a palindrome (8285555828).

The spelling of 2151234316 in words is "two billion, one hundred fifty-one million, two hundred thirty-four thousand, three hundred sixteen".