151121320 has 128 divisors (see below), whose sum is σ = 413683200. Its totient is φ = 48577536.

The previous prime is 151121303. The next prime is 151121329. The reversal of 151121320 is 23121151.

It is a junction number, because it is equal to n+sod(n) for n = 151121294 and 151121303.

It is not an unprimeable number, because it can be changed into a prime (151121329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 300189 + ... + 300691.

It is an arithmetic number, because the mean of its divisors is an integer number (3231900).

Almost surely, 2^151121320 is an apocalyptic number.

151121320 is a gapful number since it is divisible by the number (10) 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 151121320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206841600).

151121320 is an abundant number, since it is smaller than the sum of its proper divisors (262561880).

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

151121320 is a wasteful number, since it uses less digits than its factorization.

151121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587 (or 583 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 151121320 is about 12293.1411770955. The cubic root of 151121320 is about 532.6499772253.

Adding to 151121320 its reverse (23121151), we get a palindrome (174242471).

The spelling of 151121320 in words is "one hundred fifty-one million, one hundred twenty-one thousand, three hundred twenty".