151531380 has 432 divisors, whose sum is σ = 639160704. Its totient is φ = 28062720.

The previous prime is 151531349. The next prime is 151531397. The reversal of 151531380 is 83135151.

151531380 is a `hidden beast` number, since 1 + 51 + 531 + 3 + 80 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5225206 + ... + 5225234.

Almost surely, 2^151531380 is an apocalyptic number.

151531380 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 151531380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319580352).

151531380 is an abundant number, since it is smaller than the sum of its proper divisors (487629324).

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

151531380 is a wasteful number, since it uses less digits than its factorization.

151531380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 151531380 is about 12309.8082844535. The cubic root of 151531380 is about 533.1313149813.

The spelling of 151531380 in words is "one hundred fifty-one million, five hundred thirty-one thousand, three hundred eighty".